FOR RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

Peptide Standard
Research Peptides · Est. 2024

Compound
Library

Research-grade peptides. Real results. Total transparency.

Peptide Standard makes it easy to find exactly what you need — with third-party verified purity and batch COAs for every product.

What are peptides?

Peptides are short chains of amino acids — the building blocks proteins are made of. Your body already produces them as signaling molecules. Research peptides are lab-synthesized versions that mimic or amplify those natural signals, studied for applications in healing, metabolism, hormone support, and cellular repair.

All Peptide Standard products are designated for research use only. Consult a licensed medical professional before any use.

What's Your Goal?

How It Works

Step 01
Find your compound

Use our goal guide or compound library to match your goal to the right peptide. Not sure? Start with "Find My Compound."

Step 02
Email to order

Send your order to info@apxlabspeptides.com. We'll confirm availability, confirm purity, and get it shipped.

Step 03
Receive with COA

Every shipment comes with batch documentation. Request the full COA for your order anytime — we publish every lab result.

HOW PEPTIDES WORK

Science Behind
Cellular Signaling

Peptides act as precise molecular messengers. They bind to specific receptors on your cells and trigger cascades of biological responses — influencing growth, repair, metabolism, and more.

  1. 1
    Signal Initiation

    A peptide binds to a specific receptor on the cell surface, initiating the signaling process.

  2. 2
    Receptor Activation

    The receptor changes shape and activates intracellular signaling proteins, starting a chain reaction.

  3. 3
    Signal Transduction

    A cascade of intracellular events amplifies the signal through relay proteins and second messengers.

  4. 4
    Cellular Response

    The signal reaches its target — altering gene expression, metabolism, secretion, or cell behavior.

PEPTIDE LIGAND MEMBRANE RECEPTOR KINASE A cAMP PKA SIGNAL TRANSDUCTION CASCADE CELLULAR RESPONSE
PRECISE

Highly specific interactions for targeted effects

EFFICIENT

Small molecules with potent biological activity

DYNAMIC

Signals tightly regulated in time and intensity

COMPLEX

Networks integrate multiple signals for balanced outcomes

IMPACTFUL

Influences growth, repair, metabolism, immunity, and more

Not what you're thinking.

Peptides aren't steroids. Here's the actual difference.

Peptides Steroids
What they are Short chains of amino acids your body already makes Synthetic versions of testosterone or other hormones
How they work Signal your body to do what it already does — just better Flood your system with hormones it wouldn't normally produce at that level
Hormones Don't replace or suppress your natural hormones Shut down your natural hormone production
Masculinizing effects None Yes — voice changes, hair loss, acne, etc.
Liver stress No Yes, especially oral forms
Dependency No dependency. Stop anytime. Requires PCT (post-cycle therapy) to restart natural hormone production
Who uses them People who want to recover, lose fat, or feel better Competitive bodybuilders trying to maximize muscle mass

Peptides work with your body's existing systems. They nudge. They signal. They don't override. That's why the risk profile is completely different — and why more everyday people are using them.

Why Trust Peptide Standard?

We test every single batch — no exceptions

Before anything ships, it goes through independent third-party lab testing. HPLC purity, identity confirmation, endotoxin screening. Not spot-testing. Every batch. Our labs: Nutri Analytical Testing Laboratories (Anaheim, CA) and Freedom Diagnostics Testing.

You can see the actual lab report

We publish our Certificates of Analysis. Not a marketing number — a real document with the lab name, date, and result. Request the COA for your specific order anytime.

99%+ purity, verified

We don't release product that doesn't meet our purity standard. The actual assay results are on the COA — you're looking at real numbers, not a claimed floor.

USA-based operations

We operate out of the United States. No overseas drop-shipping of unknown origin. Logistics and compliance built for research-grade distribution.

"For research use only" — what that actually means

This label exists because research peptides haven't completed the FDA approval process required to be sold as pharmaceutical drugs. The compounds themselves may have extensive clinical literature — "research use only" is a regulatory classification, not a comment on purity or efficacy. It's why we can sell them without a prescription.

01

Cellular Repair & Recovery

BPC-157

Body Protection Compound — the most studied tissue repair peptide

99.10–99.31% Pure View COA
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What it does
  • Tendon and ligament repair — BPC-157 activates growth factor receptors and promotes angiogenesis (new blood vessel formation) directly at the injury site, dramatically accelerating healing of connective tissue that normally heals slowly.

  • Muscle healing — Stimulates muscle satellite cells and promotes faster regeneration after tears or overuse, reducing downtime between training sessions or after injury.

  • Gut healing — Originating from gastric juice, BPC-157 has a natural affinity for the digestive tract. Research shows significant benefit for leaky gut, IBD, IBS, and ulcers by restoring the mucosal lining.

  • Inflammation reduction — Modulates pro-inflammatory cytokines at the injury site, reducing swelling and pain without suppressing the healing signals the body needs.

  • Joint protection — Used in research for osteoarthritis and cartilage damage — promotes collagen synthesis and protects existing joint tissue from further breakdown.

How it works

The science: BPC-157 works by binding to and upregulating VEGFR2 receptors (vascular endothelial growth factor receptors), which triggers the body to grow new blood vessels directly into damaged tissue — a process called angiogenesis. It also activates the FAK-paxillin pathway, which accelerates the migration of fibroblasts (cells that build collagen and connective tissue) to the injury site, and modulates nitric oxide signaling to control local inflammation while keeping the healing cascade active.

Basically, what this means: Think of your tendons, ligaments, and gut lining as areas with really bad traffic — not enough blood supply getting in, so repair crews can't reach the damage. BPC-157 tells your body to build new roads directly to the problem. Once that blood flow opens up, your body's own healing machinery floods the area and gets to work. It doesn't do the healing itself — it just removes the roadblock that was slowing everything down.

Dosing

250–500 mcg per day, typically split into two injections. Can be injected subcutaneously near the injury site for local effect, or anywhere for systemic effect. Cycles of 4–8 weeks.

Purity & Sizes

99.10–99.31% — Nutri Analytical 03/02/2026
Available: 2.5mg · 5mg · 10mg vials

Common Questions

Depends on the goal. BPC-157 is unusually stable — it survives stomach acid, so oral dosing works well for gut-specific issues. For tendon, ligament, or muscle injuries, injection is more reliable.

Pain reduction and improved mobility often show up within 1–2 weeks. Structural healing (actual tissue repair) takes 4–8 weeks. Most people notice meaningful change within the first two weeks.

There's no established toxicity from long-term use. Many people run 4–8 week cycles with breaks, while others use it continuously during active injury recovery. When the injury is resolved, tapering off makes sense.

Yes — this is actually its original research context. BPC-157 comes from gastric juice and has a natural affinity for the GI tract. For IBD, leaky gut, Crohn's, or ulcers, oral dosing (swallowing the reconstituted solution) works particularly well.

TB-500

Thymosin Beta-4 — systemic repair and flexibility throughout the whole body

99.22–99.57% Pure View COA
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What it does
  • Systemic tissue repair — Unlike BPC-157 which is more site-specific, TB-500 works body-wide. It circulates through the bloodstream and promotes healing wherever it's needed most.

  • Increased flexibility — Promotes actin polymerization — the process cells use to reorganize and move — which improves connective tissue elasticity and range of motion.

  • Angiogenesis — Stimulates new blood vessel formation throughout the body, improving blood flow to damaged tissue and accelerating delivery of nutrients and repair signals.

  • Reduced inflammation — Downregulates systemic inflammatory signals, especially useful for chronic inflammation from overtraining, injury, or inflammatory conditions.

  • Anti-fibrotic effects — Research shows TB-500 can reduce scar tissue formation in healing wounds and organs, replacing fibrosis with healthy tissue instead.

How it works

The science: TB-500 is a synthetic version of Thymosin Beta-4, a peptide your body already produces. Its primary mechanism is regulating actin — a structural protein inside cells that controls their ability to move and reorganize. By increasing actin polymerization, TB-500 enables cells involved in repair (fibroblasts, keratinocytes, endothelial cells) to migrate from surrounding healthy tissue toward damage sites. It also upregulates VEGF and MMP (matrix metalloproteinase) expression, making it a body-wide repair signal that travels through circulation — not just locally.

Basically, what this means: BPC-157 sends repair crews to a specific address. TB-500 is the national dispatch system — it mobilizes cell migration across your whole body and sends repair signals wherever they're needed most. If BPC-157 is a targeted strike, TB-500 is an area-wide search and repair operation. That's why these two are often stacked: one handles the local scene, the other handles everything else.

Dosing

Loading: 5–10mg per week split into 2 injections for the first 4–6 weeks. Maintenance: 2.5–5mg weekly. Inject subcutaneously anywhere on the body.

Purity & Sizes

99.22–99.57% — Nutri Analytical 03/02/2026
Available: 2mg · 5mg · 10mg vials

Common Questions

They work through different mechanisms. BPC-157 is more site-specific. TB-500 promotes actin polymerization and works more systemically throughout the body. Together they cover both local and body-wide repair. If you only have one injury, BPC-157 alone may be enough.

Loading (5–10mg/week for 4–6 weeks) saturates the system quickly, useful during active injury recovery. Maintenance (2.5–5mg/week) sustains the benefit with less compound. Most people load first, then shift to maintenance.

Flexibility and range of motion often improve within 1–2 weeks. Structural tissue repair takes longer — 4–8 weeks for meaningful healing. Systemic inflammation reduction can be felt sooner.

Wolverine Blend

BPC-157 + TB-500 pre-blended — the complete recovery stack in one vial

99.46% Pure View COA
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What it does
  • Local + systemic repair simultaneously — BPC-157 targets the specific injury site while TB-500 works body-wide. Together they cover both angles — precise local repair and broad systemic recovery.

  • Faster recovery from injury — The combination has stronger synergistic effects than either compound alone, accelerating tendon, ligament, muscle, and connective tissue repair.

  • Simplified protocol — Pre-blended in a single vial (10mg BPC-157 + 10mg TB-500) so you only manage one compound instead of two. Same results, less complexity.

How it works

The science: The Wolverine Blend combines BPC-157 and TB-500 in a single vial to deliver both local and systemic tissue repair simultaneously. BPC-157 acts via VEGFR2 and FAK-paxillin pathways to drive site-specific angiogenesis and collagen synthesis. TB-500 acts via actin polymerization and VEGF upregulation to mobilize repair cells body-wide. The two mechanisms are complementary and non-competing — each targets a different phase and location of the healing process.

Basically, what this means: It's the full repair kit in one vial. BPC-157 goes straight to the injury. TB-500 sends backup from everywhere else. You don't have to manage two separate protocols — one injection covers both angles at the same time. Like having both a local fire crew and a statewide emergency response team show up at once.

Dosing

Follow BPC-157 and TB-500 dosing protocols simultaneously. Comes pre-blended in 10/10mg vial and 40mg Wolverine pen.

Purity & Sizes

99.46% — Freedom Diagnostics 04/18/2026
Available: 10/10mg vial · 40mg pen

Common Questions

Convenience. One compound to reconstitute, one injection schedule, no math on separate dosing. The biological effect is identical to running them individually — the blend just simplifies the protocol significantly.

Yes. Some people use Wolverine for systemic coverage and add an extra injection of standalone BPC-157 near a specific injury site for concentrated local effect. No known issue with doing this.

02

Metabolic & Weight Research

Semaglutide

The original GLP-1 — proven fat loss and appetite control

99.31–99.67% Pure View COA
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What it does
  • Sustained fat loss — Averages 10–15% body weight reduction over 68 weeks in clinical trials. The most studied and well-understood GLP-1 compound available, with years of safety and efficacy data.

  • Appetite suppression — Acts on GLP-1 receptors in the brain's appetite center, reducing hunger signals throughout the day. Most users naturally reduce calorie intake without conscious effort.

  • Blood sugar regulation — Stimulates glucose-dependent insulin release and suppresses glucagon, lowering overall blood glucose and reducing the risk of blood sugar spikes.

  • Slowed gastric emptying — Food moves through the stomach more slowly, which naturally reduces portion sizes and extends the feeling of fullness after eating.

  • Cardiovascular protection — Large trials showed reduced rates of heart attack, stroke, and cardiovascular death in high-risk populations — benefits beyond just weight loss.

How it works

The science: Semaglutide is a GLP-1 receptor agonist — it mimics glucagon-like peptide-1, a hormone your gut naturally releases after eating. By binding to GLP-1 receptors in the hypothalamus, it suppresses appetite signaling at the brain level. It also slows gastric emptying (food leaves your stomach slower), reduces glucagon release, and enhances insulin sensitivity. The result is significantly lower caloric intake and improved blood sugar regulation without requiring willpower.

Basically, what this means: Your gut is supposed to send a signal to your brain that says "okay, we're full, stop eating." In a lot of people, that signal is weak or delayed — you eat past full before your brain catches on. Semaglutide turns that signal way up. Your brain gets the "I'm satisfied" message faster, and the food you do eat sticks around longer so hunger doesn't come back quickly. You end up eating less without feeling like you're fighting yourself.

Dosing

Start at 0.25mg weekly for 4 weeks, then 0.5mg. Increase by 0.25–0.5mg every 4 weeks based on tolerance. Most research protocols go to 1–2.4mg weekly at maintenance.

Purity & Sizes

99.31–99.67% — Nutri Analytical 03/02/2026
Available: 2mg · 10mg · 20mg · 30mg vials

Common Questions

Same molecule, same mechanism. Ozempic and Wegovy are branded pharmaceutical versions that come pre-filled. Research peptide Semaglutide is the same compound in lyophilized powder form that you reconstitute yourself. The underlying biology is identical.

Starting low lets your body adapt to GLP-1 receptor activation. Going straight to a higher dose causes significant nausea and GI distress. The 4-week titration steps are protective — each one gives your system time to adjust before you add more.

Appetite suppression starts within days — most people eat noticeably less in the first week. Visible weight change typically appears by week 4–8. Maximum fat loss effect builds over 3–6 months as you gradually increase toward your target dose.

Tirzepatide

Dual GLP-1/GIP agonist — next-generation metabolic reset

98.99–99.90% Pure View COA
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What it does
  • Significant fat loss — Clinical studies show 15–22% average body weight reduction over 72 weeks. More effective than Semaglutide in head-to-head comparisons because it activates two pathways instead of one.

  • Appetite suppression — Slows stomach emptying so you feel full longer and hunger signals come less frequently. Eating smaller portions becomes automatic rather than effortful.

  • Blood sugar stabilization — The GLP-1 pathway stimulates insulin release after meals while the GIP pathway amplifies the response, keeping blood sugar in a healthy range throughout the day.

  • Potential muscle preservation — GIP receptor activation may help preserve lean muscle during weight loss, addressing a common issue with GLP-1-only compounds.

How it works

The science: Tirzepatide is a dual agonist — it targets both GLP-1 and GIP receptors simultaneously. GLP-1 activation suppresses appetite and slows gastric emptying (same as semaglutide). GIP activation adds a second layer: it improves insulin sensitivity in fat cells, reduces fat storage signaling, and enhances the appetite-suppression effect of GLP-1 synergistically. The dual-pathway approach produces greater weight loss outcomes than GLP-1 alone.

Basically, what this means: Semaglutide hits one switch — the "stop eating" signal. Tirzepatide hits two switches at the same time. The second one specifically targets how your body stores fat and responds to insulin. More switches turned the right direction means your metabolism starts working with you instead of against you. Think of it as the upgraded version — same lane, but with more horsepower.

Dosing

2.5mg weekly for 4 weeks, then 5mg, stepping up by 2.5mg every 4 weeks as tolerated. Most people find their sweet spot between 5–10mg weekly.

Purity & Sizes

98.99–99.90% — Nutri Analytical / Freedom Diagnostics
Available: 5mg · 10mg · 30mg · 40mg pen · 60mg vials

Common Questions

Tirzepatide activates two receptors (GLP-1 and GIP) versus Semaglutide's one (GLP-1). In head-to-head clinical trials, Tirzepatide produced more weight loss on average. The GIP component may also help preserve lean muscle better than GLP-1 alone.

Nausea, bloating, and constipation — especially in the first few weeks and after each dose increase. Eating smaller, more frequent meals and staying hydrated reduces these significantly. They tend to settle down once you stabilize at a dose.

Yes. Tirzepatide is studied and used for weight management in people without diabetes. The metabolic and fat-loss effects apply regardless of blood sugar status.

Retatrutide

Triple-pathway fat loss — the most powerful metabolic compound in research

99.23–99.93% Pure View COA
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What it does
  • Dramatic fat loss — Clinical trials showed average body weight reductions of 17–24%. Retatrutide hits three separate fat-burning receptors at once (GLP-1, GIP, and glucagon), making it significantly more powerful than single or dual-pathway compounds.

  • Appetite suppression — Most users report eating 30–50% less without willpower or effort. The hunger signal that normally drives overeating gets dialed down at the hormonal level.

  • Visceral fat reduction — Specifically targets the deep belly fat around organs (the dangerous kind), not just subcutaneous fat. This has downstream benefits for blood pressure, cholesterol, and metabolic health.

  • Insulin sensitivity — Improves how cells respond to insulin, which reduces blood sugar spikes and shifts the body toward burning fat for fuel instead of storing it.

  • Energy regulation — The glucagon component activates thermogenesis, meaning the body literally burns more calories as heat — a metabolic reset at the cellular level.

How it works

The science: Retatrutide is a triple receptor agonist — GLP-1, GIP, and glucagon receptors are all targeted simultaneously. GLP-1 and GIP handle appetite suppression and insulin sensitivity (same as tirzepatide). The glucagon receptor addition is the key differentiator: glucagon activation increases energy expenditure and fat oxidation independent of caloric intake. Your body literally burns more energy even at rest. The combination of eating less (GLP-1/GIP) and burning more (glucagon) creates a more aggressive and durable metabolic shift.

Basically, what this means: If semaglutide is a one-speed bike and tirzepatide is a two-speed, retatrutide is three speeds running at once. It suppresses how much you eat, improves how your body handles the food you do eat, and separately cranks up how fast your body burns fat — even when you're not doing anything. It's not just the strongest compound in the class, it approaches fat loss from three different angles at the same time.

Dosing

Start at 0.5mg once weekly. Titrate up slowly every 4 weeks toward 4–12mg. Slow escalation is key — stepping up every 4 weeks gives your system time to adjust.

Purity & Sizes

99.23–99.93% — Nutri Analytical / Freedom Diagnostics
Available: 10mg · 20mg vials · 40mg pen

Common Questions

Retatrutide hits three separate receptors — GLP-1, GIP, and glucagon — at once. Tirzepatide hits two (GLP-1 + GIP). Semaglutide hits one (GLP-1). More receptor targets means more fat-loss pathways working simultaneously. That's why clinical trials show higher average weight loss with Retatrutide than either of the others.

Nausea, constipation, and reduced appetite (the last one is intentional). GI side effects are dose-dependent — they're almost always caused by increasing the dose too fast. Slow titration every 4 weeks dramatically reduces them. Most people adapt within 2–4 weeks at a stable dose.

Some muscle loss is possible during rapid weight loss with any compound. The best countermeasures are eating enough protein (0.7–1g per pound of body weight) and doing resistance training. Some people stack Retatrutide with CJC-1295 specifically to preserve lean mass while losing fat.

03

Growth Hormone Peptides

Sermorelin

Gentle daily GH stimulation — the most natural growth hormone peptide

99.21–99.33% Pure View COA
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What it does
  • Natural GH stimulation — Sermorelin is a synthetic version of the first 29 amino acids of GHRH, the hormone your hypothalamus naturally uses to signal the pituitary to release growth hormone. It works with your own system, not around it.

  • Daily GH pulse support — Triggers consistent, natural-frequency GH pulses rather than a single large spike. This more closely mirrors your body's native GH release pattern, making it one of the gentlest GH peptides available.

  • Improved sleep quality — GH is primarily released during deep sleep. Sermorelin amplifies the overnight GH pulse, which many users report as noticeably deeper, more restorative sleep within the first 2 weeks.

  • Body recomposition — Elevated GH supports fat metabolism and lean muscle preservation simultaneously. Over 3–6 months, most users see meaningful changes in body composition — more muscle, less fat — without the intensity of more aggressive GH compounds.

  • Anti-aging effects — GH declines significantly with age. Sermorelin is one of the most commonly prescribed anti-aging peptides specifically because it restores more youthful GH pulsatility through a mechanism that doesn't suppress the body's own production.

How it works

The science: Sermorelin is a GHRH analog — Growth Hormone Releasing Hormone. It binds to GHRH receptors on the anterior pituitary gland and triggers the natural, pulsatile release of growth hormone. Because it works through the pituitary (not by injecting GH directly), the body's own feedback loops remain intact — when GH levels rise enough, the pituitary naturally downregulates the response. This mimics the body's natural GH release pattern more closely than any synthetic GH injection can.

Basically, what this means: As you age, your brain's "make growth hormone" signal gets quieter. You still have a pituitary that can produce GH — it's just not getting the memo as often. Sermorelin is basically a reminder note. It taps your pituitary on the shoulder and says "hey, release some GH now" — and your body does what it was designed to do. You're not replacing your hormones, you're reminding your system to do its job.

Dosing

200–500 mcg subcutaneously before bed, daily. Best taken on an empty stomach to maximize the GH pulse. Cycles of 3–6 months.

Purity & Sizes

99.21% (2mg) · 99.33% (5mg) — Nutri Analytical 03/02/2026
Available: 2mg · 5mg vials

Common Questions

Both are GHRH analogs that stimulate GH release. CJC-1295 (with DAC) has a longer half-life and produces more sustained GH elevation over days. Sermorelin has a shorter half-life and produces a single, clean daily pulse — more closely matching your body's natural rhythm. Sermorelin is often preferred for anti-aging protocols; CJC-1295 is often used for body composition where a larger, more sustained GH elevation is the goal.

Before bed, on an empty stomach (no food for 2+ hours). GH is naturally released in its largest pulse during deep sleep — Sermorelin amplifies that pulse. Taking it fasted matters because insulin blunts the GH response.

Sleep quality often improves within 1–2 weeks — that's usually the first thing people notice. Energy and recovery follow within weeks. Body composition changes (muscle, fat reduction) take 3–6 months of consistent use. Growth hormone works on a longer timeline than direct fat-loss compounds.

No. Unlike injecting actual HGH, Sermorelin works through your pituitary — it stimulates your body to make its own GH. Natural production continues and rebounds fully if you stop. This is one of its key advantages over exogenous HGH.

Tesamorelin

Targets visceral belly fat specifically — via growth hormone

99.15–99.62% Pure View COA
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What it does
  • Visceral fat reduction — Specifically targets abdominal fat around the organs (visceral fat), which is the most metabolically dangerous type. Clinical studies show 15–18% reduction in visceral adipose tissue.

  • Growth hormone stimulation — A synthetic GHRH analog that signals the pituitary gland to release natural growth hormone, which then drives fat metabolism — particularly in the abdominal region.

  • Lean muscle preservation — Growth hormone supports protein synthesis and muscle maintenance, so you lose fat without sacrificing muscle.

  • Triglyceride reduction — Secondary metabolic benefit from improved GH signaling and reduced visceral fat load — typically see improvements in blood lipid panels within 3–6 months.

How it works

The science: Tesamorelin is a GHRH analog that specifically increases IGF-1 production — Insulin-like Growth Factor 1, which mediates most of GH's downstream effects. The key distinction: elevated GH specifically reduces visceral adipose tissue (the deep belly fat around organs) through lipolysis — breaking down fat cells for energy. Tesamorelin produces this effect reliably and specifically, without the insulin resistance concerns of injecting synthetic GH directly.

Basically, what this means: There are two types of belly fat. The soft stuff just under the skin — and the hard, deep stuff wrapped around your organs (called visceral fat). Visceral fat is the dangerous kind, and it's notoriously stubborn. Tesamorelin works specifically on this type by increasing growth hormone in a way that tells your body to start pulling energy from those deep fat stores. It's not a general fat burner — it's targeted at the fat that matters most for health.

Dosing

1–2mg daily, injected subcutaneously, ideally in the evening before sleep when natural GH release peaks. Most protocols run 3–6 months.

Purity & Sizes

99.15–99.62% — Nutri Analytical 03/02/2026
Available: 2mg · 5mg · 10mg vials

Common Questions

All three are GHRH analogs that stimulate growth hormone. Tesamorelin is FDA-approved specifically for visceral (belly) fat reduction and has the most clinical data for that specific purpose. If belly fat is your primary goal, Tesamorelin is the most targeted and most clinically studied option of the three.

Evening, 30–60 minutes before bed. Growth hormone is naturally released in its largest pulse during deep sleep. Tesamorelin amplifies that pulse — so timing it with your sleep cycle maximizes the effect.

Primarily. Clinical studies show 15–18% reduction in visceral abdominal fat specifically. It won't dramatically change overall body fat %, but it systematically reduces the deep fat around organs — which is the metabolically dangerous type linked to heart disease and metabolic syndrome.

CJC-1295

Long-acting GHRH analog — sustained GH elevation for recomp, recovery, and performance

99.14% Pure View COA
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What it does
  • Sustained GH elevation — CJC-1295 with DAC (Drug Affinity Complex) has a half-life of 6–8 days, meaning a single weekly injection maintains continuously elevated growth hormone levels. This is what distinguishes it from shorter-acting GHRH analogs.

  • Elevated IGF-1 — Growth hormone triggers the liver to produce IGF-1 (insulin-like growth factor 1), which drives muscle protein synthesis and is the primary anabolic signal in adults.

  • Lean muscle growth — IGF-1 and GH work together to build muscle — not by adding water weight but by increasing the rate of actual protein synthesis and muscle fiber development.

  • Fat loss — GH directly mobilizes stored fat for energy. The combination of muscle growth and fat burning produces significant body recomposition over 3–6 months.

  • Improved sleep quality — Most users report noticeably deeper, more restorative sleep within the first 2 weeks. Often combined with Ipamorelin to amplify the GH pulse further.

How it works

The science: CJC-1295 with DAC (Drug Affinity Complex) is a GHRH analog engineered to bind to albumin in the bloodstream, dramatically extending its half-life to 6–8 days. This means a single weekly injection produces continuously elevated growth hormone and IGF-1 levels throughout the week — unlike shorter-acting GHRH analogs that create a single pulse and clear quickly. It's typically combined with Ipamorelin, which acts on GHRP receptors to trigger the actual GH release that CJC-1295 primes the pituitary for.

Basically, what this means: Think of CJC-1295 as keeping your pituitary "loaded" and ready to fire all week from a single shot. Normally, GH release happens in short bursts — mostly at night. CJC-1295 extends and amplifies those bursts so they're bigger and stay elevated longer. When you add Ipamorelin, you're adding a second trigger — one that tells the pituitary exactly when to fire. Together, one compound keeps the chamber loaded, the other pulls the trigger. It's the most common GH peptide pairing for a reason.

Dosing

1–2mg once or twice weekly (CJC-1295 w/ DAC). Often combined with Ipamorelin (100–300 mcg, 2–3x daily) for a synergistic GH pulse. Best taken before bed on an empty stomach.

Purity & Sizes

99.14% — Nutri Analytical 03/02/2026
Available: 2mg vials · also in 5/5mg CJC+Ipa blend

Common Questions

They target two different steps in the same GH release process. CJC-1295 (a GHRH analog) tells the pituitary to prepare a growth hormone pulse. Ipamorelin (a GHRP) triggers the actual release. Together they produce a significantly larger GH response than either compound alone. They're the classic 1+1=3 stack.

Sleep quality often improves within the first 1–2 weeks — that's usually the first thing people notice. Body composition changes (muscle, fat) take 3–6 months to become visible. Growth hormone works on a longer timeline than direct fat-loss or recovery compounds.

No. Unlike injecting actual growth hormone (HGH), CJC-1295 works through your pituitary — it stimulates your body to make its own GH. Natural production continues and typically rebounds fully if you stop.

Most protocols use 3–6 months on, 1–2 months off to help maintain pituitary sensitivity. If you notice diminishing returns after several months, a break usually restores full responsiveness.

04

Cellular Health & Longevity

B12 (Methylcobalamin)

Essential neurological vitamin — energy, nerve health, and metabolic support

Research-Grade Request COA
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What it does
  • Energy production — Supports energy metabolism via methylation reactions that power every cell in the body. B12 deficiency is one of the most common and most overlooked causes of chronic fatigue.

  • Nerve health — B12 is required to maintain the myelin sheath — the protective coating around nerve fibers. Deficiency leads to peripheral neuropathy, numbness, and cognitive decline.

  • Red blood cell formation — Essential for producing healthy red blood cells. Without it, cells become enlarged and ineffective — a condition called megaloblastic anemia.

  • Cognitive function — Methyl-B12 crosses the blood-brain barrier and supports neurotransmitter synthesis. Cognitive benefits are particularly pronounced in people with existing deficiency.

  • Injectable advantage — Injectable B12 bypasses poor gut absorption entirely and delivers 100% into circulation — dramatically more bioavailable than even the best oral supplements, especially in people over 50, vegans, and anyone on metformin or PPIs.

How it works

The science: B12 is a cofactor in two critical enzymatic reactions: conversion of homocysteine to methionine (methylation) and conversion of methylmalonyl-CoA to succinyl-CoA (energy metabolism). These reactions underpin red blood cell synthesis, DNA replication, myelin maintenance, and neurotransmitter production. Deficiency is common and often undetected — especially in people over 50, vegans, and anyone on metformin or PPIs, who absorb dramatically less from food. Injectable methylcobalamin delivers the active form directly into circulation, bypassing the intrinsic factor absorption pathway entirely.

Basically, what this means: B12 is one of those things your body absolutely needs but often can't get enough of from food alone — especially as you age or take certain medications. Oral supplements help but a lot of it never makes it into your bloodstream. Injecting it puts the full dose directly into circulation where your nerves, cells, and brain can actually use it. Most people with low B12 don't feel dramatically deficient — they just feel off. Getting levels optimized often produces a noticeable shift in energy and mental clarity.

Dosing

1000 mcg IM or subcutaneous, 1–3x per week or as needed. Maintenance dosing is typically once weekly after an initial loading phase.

Form

Methylcobalamin — the active, bioavailable form. Preferred over cyanocobalamin for neurological applications.

Common Questions

People over 50 (stomach acid required for absorption declines with age), vegans and vegetarians (B12 only comes from animal products), anyone on metformin (blocks absorption), and anyone on PPIs or antacids long-term. Blood testing is the only reliable way to know.

Methylcobalamin is the biologically active form — your body uses it directly. Cyanocobalamin (the form in most cheap supplements) must be converted by the liver before it can be used. For neurological applications especially, methylcobalamin is the preferred form.

05

Cognitive & Mood

Selank

Anti-anxiety neuropeptide — calm focus, stress relief, and cognitive enhancement

Research-Grade Request COA
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What it does
  • Anxiety reduction — Modulates GABA receptors and serotonin metabolism without sedation or dependency. The calming effect is real but doesn't fog your thinking.

  • Focus and cognition — Increases BDNF (brain-derived neurotrophic factor), improving learning, memory consolidation, and mental clarity. Users consistently report sharper, more available thinking.

  • Stress adaptation — Normalizes IL-6 immune signaling, reducing the physical stress response. The body stops treating ordinary demands like emergencies.

  • No dependency or withdrawal — Unlike benzos or SSRIs, Selank shows no withdrawal effects in research. There is no rebound anxiety when stopping.

How it works

The science: Selank is a synthetic heptapeptide analog of tuftsin — a naturally occurring immune peptide — developed by the Institute of Molecular Genetics in Russia. It modulates the GABAergic system (the brain's primary inhibitory neurotransmitter system) and stimulates BDNF production in the hippocampus. Unlike benzodiazepines that bind directly to GABA-A receptors and cause sedation, Selank works upstream to normalize the balance between excitatory and inhibitory signaling without forcing receptor downregulation or dependency.

Basically, what this means: It's the feeling of being calm without being foggy. Selank turns down the anxiety volume without making you slow. Most users describe it as the clearest-headed version of relaxed they've ever felt — focused, calm, present. Unlike prescription anxiety medications, it doesn't impair performance or leave you dependent. It works with your brain's natural chemistry rather than overriding it.

Dosing

250–1000 mcg subcutaneous or intranasal daily. Most people use intranasal for convenience. Cycles of 4–8 weeks or ongoing as needed.

Administration

Intranasal (most common) or subcutaneous injection. Intranasal has faster onset for acute anxiety; subcutaneous provides more sustained effect.

Common Questions

No — this is the key distinction from benzodiazepines. Selank reduces anxiety without sedation. Most users feel calmer and simultaneously more focused, not less. It's been used in research specifically for its "anxiolytic without sedation" profile.

Yes — intranasal Selank has a fast onset, typically 15–30 minutes. Many users take it before high-stakes situations (presentations, difficult conversations, stressful events) for acute anxiety management without impairment.

Yes — commonly combined. Selank handles the anxiety/calm side, Semax handles focus and cognition. Together they're considered one of the cleanest cognitive enhancement stacks in research peptide use.

Semax

Cognitive enhancement peptide — focus, neuroprotection, and brain-derived growth

Research-Grade Request COA
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What it does
  • BDNF elevation — Dramatically increases brain-derived neurotrophic factor, promoting new neural connections and protecting existing ones. BDNF is essentially fertilizer for your brain.

  • Focus and memory — Improves working memory, attention span, and information processing speed. Most users notice sharper recall and faster thinking within days of starting.

  • Neuroprotection — Shown to reduce neurological damage in ischemic models; studied for stroke recovery and traumatic brain injury support. Protects neurons under stress.

  • Dopamine and serotonin optimization — Modulates neurotransmitter metabolism for improved mood and motivation. Many users report an elevated baseline sense of drive and engagement.

How it works

The science: Semax is a synthetic heptapeptide analog of ACTH(4-10) — a fragment of adrenocorticotropic hormone. It upregulates BDNF expression in the hippocampus and prefrontal cortex, and simultaneously affects dopaminergic, serotonergic, and glutamatergic neurotransmitter systems. The BDNF increase promotes neurogenesis (growth of new neurons), synaptogenesis (new neural connections), and neuronal survival under oxidative stress. It's been studied extensively in Russia for stroke recovery, cognitive decline, and neurological trauma.

Basically, what this means: BDNF is like fertilizer for your brain. It helps neurons grow, connect, and survive. Most people's BDNF is suppressed by chronic stress, poor sleep, and sedentary lifestyles. Semax essentially floods your brain with growth signal, and most people notice sharper focus, better recall, and improved motivation within days. It's not a stimulant — it doesn't feel like caffeine. It feels more like your brain is operating at a higher baseline capacity.

Dosing

200–600 mcg subcutaneous or intranasal daily. Often cycled 4–8 weeks. Intranasal is fast-absorbing and preferred by most users.

Administration

Intranasal (most common) or subcutaneous injection. Intranasal crosses the blood-brain barrier rapidly via olfactory pathways — onset within minutes.

Common Questions

Many users notice improved focus and mental clarity within the first few days. BDNF-related effects (neurogenesis, improved memory consolidation) build over 2–4 weeks of consistent use. The acute dose effect (sharper thinking within hours) is common.

Different mechanism. Racetams affect acetylcholine signaling; modafinil promotes wakefulness through dopamine reuptake inhibition. Semax works upstream by stimulating your brain's own growth factors. Most people find it feels more natural and sustained, without the crash or tolerance associated with stimulant nootropics.

Yes — this is one of the most popular cognitive stacks in peptide research. Semax provides the cognitive lift and BDNF boost; Selank removes the anxiety that often comes with high cognitive demand. Together they're considered complementary compounds targeting different aspects of optimal brain function.

06

Immune & Longevity

MOTS-C

Mitochondria-derived peptide — metabolic health, exercise performance, and longevity

Research-Grade, Batch COA Available Request COA
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What it does
  • Metabolic regulation — Activates AMPK (the same pathway triggered by exercise), improving insulin sensitivity and glucose uptake in muscle cells without requiring physical activity.

  • Exercise performance — Increases endurance capacity and reduces exercise-induced fatigue by optimizing mitochondrial energy output.

  • Fat oxidation — Promotes the burning of fat as fuel rather than storing it, particularly useful in metabolically compromised individuals.

  • Anti-aging / longevity — Mitochondrial-derived peptides decline with age; restoring MOTS-C levels has been associated with improved metabolic flexibility and healthspan in research models.

  • Insulin sensitivity — Particularly studied in models of type 2 diabetes and metabolic syndrome for improving cellular glucose uptake.

How it works

The science: MOTS-C is encoded directly within mitochondrial DNA — making it unique among all peptides in this library. It translocates to the cell nucleus under metabolic stress and activates AMPK and the folate-methionine cycle, which regulates energy balance and metabolic homeostasis at the cellular level. AMPK activation mimics the metabolic effects of exercise — improving glucose uptake, promoting fat oxidation, and enhancing mitochondrial biogenesis — without physical exertion.

Basically, what this means: Think of MOTS-C as the message your mitochondria (power plants) send out when the body is under stress — telling cells to shift into efficient mode, burn fat for fuel, and handle blood sugar better. It's like your cells' internal performance coach, and its levels drop significantly as you age. Restoring it puts that coaching signal back. It's particularly compelling because it comes from inside your own mitochondria — it's not foreign to the body, it's a signal the body already uses and loses over time.

Dosing

5–10 mg twice weekly. Subcutaneous injection. Often cycled 8–12 weeks.

Purity

Research-grade. Batch COA available on request.

Common Questions

People with metabolic concerns (pre-diabetes, insulin resistance, difficulty losing fat), aging athletes wanting to preserve performance, or anyone focused on longevity and cellular health. It's particularly relevant for individuals whose metabolism has slowed with age.

They're complementary, not the same. NAD+ fuels mitochondrial function. MOTS-C is the signaling peptide those mitochondria produce. Stacking them is common in longevity protocols — NAD+ powers the machinery, MOTS-C sends the signals the machinery generates.

Epithalon

Telomere-extending peptide — the most studied longevity compound in research

Research-Grade Request COA
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What it does
  • Telomere extension — Activates telomerase, the enzyme that lengthens telomeres (the protective caps on chromosomes that shorten with age). Longer telomeres correlate with cellular youth and longevity.

  • Pineal gland regulation — Restores melatonin production and circadian rhythm regulation, particularly in older individuals whose pineal function has declined with age.

  • Antioxidant activity — Reduces lipid peroxidation and free radical damage at the cellular level.

  • Immune modulation — Shown to restore T-cell and NK cell activity in aging immune systems, essentially re-training an undertrained immune army.

  • Lifespan extension in research models — One of the most replicated longevity peptides in research, with decades of study from Russian gerontology research.

How it works

The science: Epithalon is a tetrapeptide (four amino acids: Ala-Glu-Asp-Gly) originally derived from the pineal gland extract "Epithalamin" by the St. Petersburg Institute of Bioregulation. It activates telomerase — the enzyme responsible for adding repeat sequences (TTAGGG) to the ends of chromosomes, countering telomere shortening with each cell division. It also regulates melatonin synthesis via the pineal gland and modulates HPA axis activity, with effects on cortisol and immune function documented in longitudinal human studies.

Basically, what this means: Imagine your DNA has protective covers on each end, like the plastic tips on shoelaces. Every time your cells copy themselves, those tips get a little shorter. When they run out, the cell stops dividing and ages out. Epithalon is the only compound with solid research showing it can rebuild those tips — which is why longevity researchers consider it one of the most important compounds in this category. It doesn't just slow aging — it works at the level where aging actually starts.

Dosing

5–10 mg daily for 10–20 day cycles, 1–2x per year. Subcutaneous or IV. Unlike most peptides, Epithalon is run in short intensive cycles rather than ongoing daily use.

Who It's For

Anyone with anti-aging as a priority. Particularly relevant for 45+ individuals focused on longevity, cellular health, and long-term healthspan.

Common Questions

Unlike most peptides, Epithalon is run in short intensive cycles (10–20 days) 1–2 times per year rather than ongoing daily use. The telomerase activation and cellular effects appear to persist well beyond the dosing window, which is why long continuous protocols aren't required.

Yes — Epithalon is one of the most heavily researched longevity peptides in existence, with decades of studies from Russian gerontology institutes including human trials. The telomerase activation mechanism is well-documented. It's not speculative — it's among the most evidence-backed compounds in this entire library for its stated application.

Thymosin Alpha-1

Immune system optimizer — T-cell activation, viral defense, and immune modulation

Research-Grade Request COA
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What it does
  • T-cell activation — Stimulates T-lymphocyte maturation and activity — the immune cells responsible for identifying and destroying pathogens and abnormal cells.

  • Antiviral and antibacterial — Shown to enhance immune response to viral infections; studied extensively for chronic infections, hepatitis B/C, and immune dysfunction.

  • Immune modulation — Unlike immune stimulants that simply crank everything up, Thymosin Alpha-1 modulates — boosting where needed, calming overactivation where not. It's a tuning mechanism, not a blunt force tool.

  • Adjuvant effect — Increases vaccine efficacy and immune memory formation. Used clinically in conjunction with vaccines for patients with compromised immune response.

How it works

The science: Thymosin Alpha-1 is a 28-amino acid peptide naturally produced by the thymus gland. It stimulates T-lymphocyte differentiation and maturation by activating toll-like receptors (TLR2 and TLR9) on dendritic cells, promoting Th1 cytokine production and NK cell activity. The thymus — the organ responsible for "educating" T-cells to recognize threats — shrinks and loses function with age (thymic involution), which is one of the primary reasons immune competence declines in older adults. Thymosin Alpha-1 effectively compensates for this decline.

Basically, what this means: Your immune system has an army of T-cells. Think of the thymus as their training camp. As you age, the camp closes down and the army gets undertrained — they can't identify threats as well and respond more slowly. Thymosin Alpha-1 reopens the camp and gets them sharp again. It's not just "boosting" your immune system broadly — it's specifically retraining the cells that are supposed to protect you.

Dosing

1–1.5 mg subcutaneous, 2x per week. Common cycles: 8–12 weeks during periods of immune challenge or as maintenance.

Best Used For

Chronic immune issues, frequent illness, post-viral recovery, aging immune support, and as a complement to vaccine protocols.

Common Questions

No — despite both being thymic peptides, they have completely different functions. TB-500 (Thymosin Beta-4) is primarily a tissue repair and recovery compound. Thymosin Alpha-1 is specifically an immune modulator. Different compounds, different targets, different applications.

Yes — Thymosin Alpha-1 (sold as Zadaxin) is approved in over 35 countries for hepatitis B, hepatitis C, and as an adjuvant for certain vaccines and cancer immunotherapy. It has an extensive human clinical trial record. It is available here for research purposes.

DSIP

Natural sleep regulation peptide — deep sleep, cortisol control, and stress recovery

Research-Grade Request COA
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What it does
  • Deep sleep induction — DSIP promotes slow-wave (deep) sleep without sedation — no grogginess, no dependency. You fall asleep naturally and go deeper.

  • Cortisol reduction — Shown to reduce elevated cortisol levels, helping stress-wired individuals actually wind down at the end of the day.

  • GH pulse amplification — Deep sleep is when growth hormone peaks. Better deep sleep means better overnight repair and recovery through natural GH release.

  • Stress adaptation — Research shows DSIP improves the body's stress response and helps normalize disrupted sleep cycles from shift work, jet lag, or chronic stress.

How it works

The science: DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring neuropeptide first isolated from rabbit cerebral venous blood in 1977. It crosses the blood-brain barrier and binds to delta-wave sleep receptors in the hypothalamus, promoting the transition to slow-wave sleep. It also modulates the HPA axis — the cortisol stress response system — reducing elevated cortisol at night that would otherwise suppress deep sleep. Unlike sedatives, DSIP does not bind to GABA-A receptors and produces no sedation, tolerance, or dependency.

Basically, what this means: Most people with bad sleep are stuck in light, fragmented sleep — they're not getting to the deep restorative stage where real recovery happens. DSIP is like a key that unlocks deep sleep without forcing sedation. You fall asleep naturally, go deeper, and wake up actually rested. It's particularly effective for people whose cortisol stays elevated at night — the "wired but tired" pattern that makes quality sleep impossible even when you're exhausted.

Dosing

100–600 mcg subcutaneous, 30–60 min before bed. Cycles of 4–8 weeks.

Stack Note

Common pairing with Ipamorelin — DSIP improves sleep architecture while Ipamorelin amplifies the GH pulse during sleep. Together they create an optimal overnight recovery environment.

Common Questions

No. DSIP works with your natural sleep rhythm rather than forcing sedation. It doesn't suppress the nervous system the way sedatives do. Most people wake feeling unusually rested rather than groggy.

Yes — this is one of the most common sleep optimization stacks. DSIP improves sleep architecture and deepens slow-wave sleep. Ipamorelin amplifies the natural GH pulse that occurs during deep sleep. Together they create an optimal overnight recovery environment — better sleep quality and better repair simultaneously.

MT2 (Melanotan II)

Tanning peptide with libido and appetite effects — melanocortin receptor activation

Research-Grade Request COA
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What it does
  • Skin tanning — Activates MC1R receptors, triggering melanin production for a natural-looking tan with significantly less UV exposure required.

  • Libido enhancement — Acts on MC4R receptors in the hypothalamus to increase sexual arousal and erectile function in research models.

  • Appetite suppression — Secondary effect of melanocortin activation; some users report reduced appetite as a side benefit.

  • UV protection — Increased melanin provides some photoprotection; studied as a skin cancer prevention adjunct through reduced UV damage.

How it works

The science: MT2 is a cyclic heptapeptide analog of alpha-MSH (alpha-melanocyte-stimulating hormone). It activates melanocortin receptors system-wide — primarily MC1R (skin pigmentation) and MC4R (hypothalamic control of libido, arousal, and appetite). MC1R activation stimulates melanocytes to produce eumelanin (the dark, protective form of melanin), accelerating natural tanning. MC4R activation in the hypothalamus triggers the sexual arousal cascade and also influences appetite regulation.

Basically, what this means: Your body already has a tanning system — MT2 just turns the dial up without requiring as much sun. The same hormonal cascade that triggers melanin also hits receptors in your brain that control libido and appetite, which is why those secondary effects occur. Start very low and titrate up — the dose-to-effect ratio is more sensitive than most compounds.

Dosing

0.25–1 mg subcutaneous. Start very low (0.25 mg) to assess tolerance. Commonly used before sun exposure to maximize tanning effect.

Tolerance Note

At higher doses, nausea is the most common side effect. Starting at 0.25 mg and titrating up slowly minimizes this significantly.

Common Questions

At higher doses, yes — nausea is the most commonly reported side effect. Starting at 0.25 mg and titrating up over several sessions minimizes it significantly. Most people find their nausea threshold and stay below it once they've established their individual response.

Some UV exposure helps activate the melanocytes, but the amount required is dramatically less than tanning without MT2. Brief sun exposure (15–30 min) after dosing is common protocol. The compound primes the skin to tan much more efficiently.

Kisspeptine

Hormone cascade activator — natural LH, FSH, and testosterone stimulation

Research-Grade Request COA
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What it does
  • LH and FSH stimulation — Activates the HPG axis (hypothalamic-pituitary-gonadal) to trigger natural release of luteinizing hormone and follicle-stimulating hormone.

  • Testosterone support — By stimulating LH, kisspeptine drives natural testosterone production — supporting your body's own output rather than replacing it exogenously.

  • Libido enhancement — Strong effect on sexual motivation through hypothalamic pathways, independent of but compounded by the testosterone effect.

  • Fertility support — Used in research for both male and female fertility — stimulates ovulation in women and supports sperm production in men.

How it works

The science: Kisspeptine (KP-10/KP-54) is an endogenous neuropeptide that binds to the KISS1R receptor on GnRH neurons in the hypothalamus, directly triggering GnRH (gonadotropin-releasing hormone) pulsatile release. GnRH then signals the pituitary to release LH and FSH. LH drives testicular testosterone production (Leydig cells) in men and ovulation in women. Kisspeptine sits at the very top of the reproductive hormone cascade — upstream of every other hormone in the chain.

Basically, what this means: Most testosterone "boosters" work at the end of the hormone chain. Kisspeptine goes straight to the control room and tells your brain to turn on the whole system. It's the difference between pushing the last domino versus the first one. The natural, pulsatile nature of the effect also means the downstream hormones are released in patterns that mirror normal physiology — not the constant elevated levels of exogenous testosterone.

Dosing

10–100 mcg subcutaneous. Pulsatile dosing (every few hours) mirrors the body's natural kisspeptine rhythm for optimal HPG axis response.

Best Used For

Natural testosterone support, HPT axis restoration after suppression, fertility optimization, and libido enhancement.

Common Questions

TRT (testosterone replacement therapy) delivers exogenous testosterone directly, which typically suppresses your body's own production. Kisspeptine works at the top of the hormone cascade to stimulate your body to produce its own testosterone naturally. It supports the axis rather than bypassing it.

Yes — kisspeptine is a key regulator of the female reproductive axis as well. It triggers LH surges that drive ovulation, and has been studied clinically for female fertility disorders. The hormonal effects differ by sex (testosterone in men, LH/FSH/estrogen dynamics in women) but the upstream mechanism is the same.

07

Skin, Gut & Repair

GHK-Cu (Copper Peptide)

Skin renewal and systemic repair — activates over 4,000 genes involved in healing

Research-Grade Request COA
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What it does
  • Collagen and elastin synthesis — Directly stimulates production of skin-firming structural proteins, reducing wrinkles and improving skin density.

  • Wound and tissue healing — Accelerates repair of skin, tendons, and blood vessels. Shown to improve healing speed and scar quality.

  • Hair growth — Activates follicle stem cells; studied for androgenic alopecia (pattern baldness) and hair density improvement.

  • Anti-inflammatory — Modulates inflammatory cytokines and promotes anti-inflammatory gene expression throughout the body.

  • Gene regulation — Activates over 4,000 human genes involved in tissue repair, making it one of the most broad-acting repair compounds in research.

How it works

The science: GHK-Cu is a naturally occurring copper-binding tripeptide (glycine-histidine-lysine complexed with copper ion) that declines with age — from ~200 ng/mL at age 20 to ~80 ng/mL by age 60. It acts as a master regulator of healing gene expression: when it enters tissues bound to copper, it activates TGF-beta signaling (collagen synthesis), upregulates antioxidant enzymes (superoxide dismutase), and modulates over 4,000 genes related to tissue repair, anti-aging, and anti-inflammatory processes.

Basically, what this means: Think of GHK-Cu as the body's "healing mode" switch. When you're young, levels are high and your body repairs itself fast — skin bounces back, wounds close cleanly, inflammation resolves quickly. As levels drop, healing slows and aging accelerates. GHK-Cu restores that switch. The 4,000 genes it activates aren't a marketing number — it's the actual count from microarray studies showing how broadly it affects cellular repair programming.

Dosing

Topical (most common for skin), or subcutaneous 1–2 mg daily. Also a key component of the KLOW Blend.

Also In

GHK-Cu is the primary component of KLOW Blend (54.24mg per pen) and GLOW Blend. Available standalone for targeted use.

Common Questions

For skin specifically — topical works well because GHK-Cu penetrates the dermis effectively. For systemic effects (tissue repair, hair growth, anti-aging throughout the body) subcutaneous injection reaches systemic circulation. Many people use both: topical for the face and injected for whole-body effects.

Skin improvement is typically visible within 4–8 weeks of consistent use. Collagen synthesis is a slow biological process — the cells have to actually build structural protein. Most people notice improved skin texture and firmness first, followed by reduced fine lines over 2–3 months.

KPV

Anti-inflammatory tripeptide — gut healing, skin inflammation, and systemic calm

Research-Grade Request COA
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What it does
  • Gut inflammation — Acts directly on intestinal cells to suppress inflammatory signals; studied for IBD, Crohn's disease, and colitis with documented reduction in mucosal inflammation.

  • Skin conditions — Shown to reduce inflammation in psoriasis, eczema, and wound healing. Can be applied topically or used systemically.

  • Systemic anti-inflammatory — Inhibits NF-kB pathway, one of the primary pro-inflammatory signaling cascades in the body. Targets inflammation at the source rather than masking symptoms.

How it works

The science: KPV is the C-terminal tripeptide fragment of alpha-MSH (Lys-Pro-Val). It retains the anti-inflammatory activity of the parent hormone by binding to melanocortin receptors (particularly MC1R) on immune cells and intestinal epithelium. This binding suppresses NF-kB nuclear translocation — inhibiting the production of pro-inflammatory cytokines (TNF-alpha, IL-6, IL-8) while promoting anti-inflammatory mediators. Unlike full alpha-MSH, KPV is small enough to survive oral delivery, making it unique among most peptides in that oral administration is viable.

Basically, what this means: It's a very targeted anti-inflammatory that goes where inflammation is most damaging — the gut lining and skin — and turns down the fire without suppressing the whole immune system. Unlike NSAIDs or steroids that blunt the entire immune response, KPV targets specific inflammatory signaling pathways. And because it can be taken orally and still reach the gut lining intact, it's one of the most practical options for gut inflammation specifically.

Dosing

300–600 mcg orally or subcutaneous daily. Oral dosing is viable and often preferred for gut-specific applications. Also available in KLOW Blend and GLOW Blend.

Also In

KPV is a component of both KLOW Blend and GLOW Blend. Available standalone for targeted gut or skin inflammation protocols.

Common Questions

Yes — KPV is one of the rare peptides that survives oral administration intact. Its small size (tripeptide) allows it to reach the intestinal lining without being fully broken down in the stomach. This makes it particularly practical for gut-specific applications — oral dosing delivers it directly where it's needed most.

They work through different mechanisms and complement each other well. BPC-157 drives angiogenesis and structural tissue repair — it rebuilds damaged gut lining. KPV specifically suppresses inflammatory signaling in intestinal cells — it calms the inflammatory environment that was causing damage. BPC-157 fixes what's broken; KPV reduces the fire that was breaking it.

GLOW Blend

Skin, gut, and cellular renewal in one vial — GHK-Cu + KPV + BPC-157

Research-Grade Request COA
+
What it does
  • GHK-Cu (skin renewal) — Activates healing genes and collagen synthesis, activating over 4,000 genes related to repair and anti-aging. The skin and tissue renewal driver of the blend.

  • KPV (gut anti-inflammatory) — Calms inflammatory signals in the gut and skin via melanocortin receptor pathways. Addresses the inflammation that drives chronic gut and skin conditions.

  • BPC-157 (tissue repair) — Drives angiogenesis and structural tissue repair at injury sites. Rebuilds what inflammation broke down.

How it works

The science: GLOW combines three compounds across complementary repair pathways: GHK-Cu activates TGF-beta signaling and upregulates collagen I/III, elastin, and antioxidant genes; KPV binds MC1R on intestinal epithelium to suppress NF-kB mediated cytokine production; BPC-157 upregulates VEGFR2 for local angiogenesis and FAK-paxillin pathway for fibroblast migration and connective tissue repair. Each compound targets a distinct mechanism — gene regulation, inflammatory control, and structural rebuilding — simultaneously.

Basically, what this means: GLOW is built for skin health and gut health in the same protocol. GHK-Cu rebuilds your skin from the gene level up. KPV puts out the inflammatory fire in your gut and skin. BPC-157 repairs the structural tissue damage. Three completely different jobs, one vial — designed for people whose goals include both looking better and feeling better in their gut simultaneously.

Dosing

Follow individual component protocols. Available as 10/10/50 vial. See each component's dosing for guidance.

Available Formats

10/10/50 vial and 80mg pen. Pre-blended — no reconstitution or individual vial management needed.

Common Questions

KLOW contains four compounds: GHK-Cu, KPV, BPC-157, and TB-500. GLOW contains three: GHK-Cu, KPV, and BPC-157 — without TB-500. KLOW adds systemic body-wide healing via TB-500. GLOW is more focused specifically on skin and gut applications. Both are valid depending on whether your goals include broader tissue repair (KLOW) or are more skin/gut-specific (GLOW).

People focused on skin health, anti-aging, and gut repair simultaneously. It's particularly well-suited for anyone dealing with inflammatory gut conditions (IBD, leaky gut, IBS) who also wants the skin and collagen benefits of GHK-Cu. If you're also managing injury recovery, KLOW (with TB-500) may be the better fit.

08

Energy & Cellular Health

NAD+

Cellular energy currency — powers mitochondria, DNA repair, and longevity pathways

99.17–99.80% Pure View COA
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What it does
  • Mitochondrial energy production — NAD+ is the fuel that runs the mitochondria — your cells' power plants. When levels drop (they decline ~50% by age 50), every energy-requiring function in the body suffers. Restoring NAD+ directly improves cellular energy output.

  • DNA repair — NAD+ is a required cofactor for PARP enzymes, which scan and repair DNA damage throughout the body. Higher NAD+ = faster, more complete repair of the DNA breaks that accumulate with age and stress.

  • Sirtuin activation — Sirtuins are the body's longevity proteins — they regulate cellular stress responses, inflammation, and metabolic efficiency. They require NAD+ to function.

  • Cognitive clarity and focus — Brain cells are extremely energy-hungry. NAD+ deficiency hits cognitive function early — most people report sharper thinking, better memory, and reduced brain fog after dosing.

  • Better bioavailability than oral forms — Oral NAD+ supplements (NMN, NR) must be converted through multiple metabolic steps. Injectable NAD+ delivers it directly to cells, bypassing degradation in the gut.

How it works

The science: NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in every cell that is essential for two critical processes: mitochondrial ATP production (energy generation) and sirtuin activation (proteins that regulate DNA repair, inflammation control, and cellular aging). NAD+ levels decline roughly 50% between ages 20 and 60. Without sufficient NAD+, mitochondria produce energy less efficiently, DNA repair slows, and cells age faster. IV or subcutaneous NAD+ replenishes systemic levels directly, bypassing the limited absorption of oral forms.

Basically, what this means: NAD+ is like the electricity your cells run on. Every cell in your body needs it to make energy and repair itself. The problem is your NAD+ levels drop by about half as you get older — which is a big reason why recovery takes longer, you feel tired more easily, and things just don't bounce back the way they used to. Restoring NAD+ levels is like plugging back into full power. People describe it as a deep energy — not a caffeine buzz, but feeling like your body is actually running the way it's supposed to.

Dosing

500–1000mg per injection, 2–3 times weekly. Can feel intense (flushing, warmth) if pushed too fast — inject slowly to reduce this. Typically felt within the first session.

Purity & Sizes

99.17–99.80% — Nutri Analytical / Freedom Diagnostics
Available: 500mg · 1000mg vials

Common Questions

Rapid NAD+ administration triggers vasodilation and a sudden surge in mitochondrial activity. Your cells are essentially powering up fast. The sensation — warmth, tingling, sometimes a racing pulse — is benign and passes. Injecting more slowly (over 30–60 seconds) reduces it significantly.

Not exactly. NMN and NR are precursors that your body converts into NAD+. Injectable NAD+ delivers it directly to cells, bypassing the conversion step entirely. Apples and apple juice — related but not the same.

Energy improvement is usually the first signal — often within the first 1–2 sessions. Mental clarity frequently improves before anything physical does. Better sleep, faster recovery, and improved endurance take 4–6 weeks to register meaningfully.

Glutathione

The master antioxidant — detox, immune defense, and cellular protection

98.44% Pure Request COA
+
What it does
  • Free radical neutralization — Glutathione is the body's most abundant and most important antioxidant. It neutralizes reactive oxygen species (ROS) that damage DNA, cell membranes, and proteins — the fundamental process behind aging and disease.

  • Heavy metal and toxin detox — Directly binds and neutralizes heavy metals (mercury, lead, arsenic), environmental toxins, and drug metabolites, tagging them for removal through bile and urine.

  • Liver protection — The liver uses glutathione as its primary detox molecule. High-dose glutathione injection restores liver function and supports recovery from hepatic stress.

  • Skin brightening and anti-aging — Inhibits melanin production and promotes glutathione peroxidase activity in the skin, resulting in a brighter, more even skin tone with reduced oxidative aging.

  • Injectable advantage — Oral glutathione is largely destroyed in the digestive tract. Injection bypasses this entirely, delivering intact glutathione directly into circulation where it's available to every cell.

How it works

The science: Glutathione is the body's primary endogenous antioxidant — a tripeptide (glycine, cysteine, glutamate) produced in the liver that neutralizes reactive oxygen species (free radicals) before they damage cellular structures. It also plays a central role in liver detoxification phase II reactions, regenerates other antioxidants (vitamins C and E), and modulates immune signaling by regulating T-cell proliferation and cytokine production. Levels are depleted by stress, alcohol, poor diet, medications, and aging.

Basically, what this means: Your body is constantly producing waste — from energy production, from toxins, from exercise. Glutathione is the cleanup crew. It neutralizes the harmful byproducts before they damage your cells, helps your liver process things out, and keeps your immune system calibrated. Most people are running with a depleted crew and don't know it. When you replenish glutathione, people often notice skin clarity, better energy, faster recovery, and feeling generally less beat up — because your cells are finally running clean.

Dosing

600–1500mg per injection. Can be taken 2–3 times weekly for general health, or more aggressively for detox protocols.

Purity & Sizes

98.44% — Freedom Diagnostics 04/18/2026
Available: 1000mg pen · 1500mg vial

Common Questions

No — most oral glutathione is destroyed in the digestive tract before reaching the bloodstream. Injectable glutathione delivers intact molecules directly into circulation where every cell can access them. This is why the injectable form is used clinically while the oral form is mostly considered a supplement.

Yes — inhibition of melanin production is well-documented. It works by inhibiting tyrosinase, the enzyme that produces melanin. Skin brightening happens gradually over 4–8 weeks of consistent use.

Energy and subjective detox effects can be felt within hours of a session. Skin-related effects take 4–8 weeks of consistent use. Liver support improvements can be tracked in blood work within 2–4 weeks.

KLOW Blend

GHK-Cu · KPV · BPC-157 · TB-500 — four compounds in one pen for skin, gut, and whole-body recovery

99.79% Pure Request COA
+
What it does
  • GHK-Cu (54.24mg) — Copper peptide for collagen production, skin repair, hair follicle stimulation, and broad anti-aging gene expression. The largest component by mass — this blend is skin and tissue-forward.

  • KPV (8.16mg) — Tripeptide anti-inflammatory that targets NF-kB (the master inflammation switch) and has specific affinity for gut healing. Provides systemic anti-inflammatory coverage and skin healing support.

  • BPC-157 (9.27mg) — Body Protection Compound for local tissue repair, tendon and ligament healing, and gut restoration. Adds site-specific repair coverage to the blend's systemic effects.

  • TB-500 (8.20mg) — Thymosin Beta-4 for body-wide systemic recovery, flexibility, and angiogenesis. Ensures the blend's repair effects reach beyond the injection site throughout the body.

How it works

The science: The KLOW Blend combines four compounds across distinct biological pathways: GHK-Cu stimulates collagen synthesis and activates skin repair genes (TGF-β, FGF); KPV (α-MSH fragment) acts on MC-1R receptors in the gut to suppress inflammatory cytokines — particularly useful for IBD and systemic inflammation; BPC-157 drives local angiogenesis and connective tissue repair via VEGFR2 and FAK pathways; TB-500 promotes systemic cell migration and body-wide healing via actin polymerization. Each targets a different layer of repair simultaneously.

Basically, what this means: Most blends double up on the same thing. KLOW stacks four compounds that each do something completely different. One rebuilds skin and collagen. One turns down inflammation in your gut. One sends a repair crew to wherever you're injured. One mobilizes healing across your whole body. It's four entirely different jobs, one injection — which is why it's used when someone needs complete recovery coverage, not just one specific fix.

Dosing

Follow dosing similar to BPC-157 and TB-500 protocols combined. Pre-blended in an 80mg combo pen — no reconstitution needed. Cycles of 4–8 weeks.

Purity & Sizes

99.79% — Freedom Diagnostics 04/18/2026
Available: 80mg combo pen (GHK-Cu: 54.24mg / KPV: 8.16mg / BPC-157: 9.27mg / TB-500: 8.20mg)

Common Questions

Each compound targets a different recovery mechanism — GHK-Cu for skin and cellular renewal, KPV for inflammation control, BPC-157 for local tissue repair, TB-500 for systemic body-wide healing. Combining them means one injection covers four distinct biological pathways simultaneously. It's a comprehensive recovery and anti-aging protocol simplified into a single pen.

The biology is identical to running all four individually — the blend just removes the need to manage four separate vials, reconstitutions, and injection schedules. If you were already planning to run two or more of these compounds, the KLOW pen significantly simplifies your protocol.

People who want broad-spectrum support — skin health, gut healing, injury recovery, and systemic inflammation — without running separate protocols for each. It's particularly well-suited for people dealing with multiple things at once (e.g., active recovery from injury plus skin and aging goals) who want to keep their protocol simple.

Also Available

Pen Delivery System

Several compounds are available in pre-filled, dial-a-dose pen format — no reconstitution needed, easy for travel and daily use.

Tirzepatide 40mg pen Dial-a-dose GLP-1/GIP pen
Retatrutide 40mg pen Triple agonist pen
Wolverine 40mg pen BPC-157 + TB-500 blend
Glutathione 1000mg pen Master antioxidant, convenient format
KLOW Blend 80mg pen GHK-Cu · KPV · BPC-157 · TB-500

99%+ Purity.
Third-party verified.

Every batch. No exceptions.

99%+ Minimum Purity
27 Compounds
3P Third-Party Tested

Ready to Order?

Email us with what you're looking for and we'll get back to you with availability, pricing, and your batch COA.

Email to Order →

Find My Compound

Pick your goal below. We'll tell you exactly what to get, what to expect, and how much to order.

01

Pick your goal

Recovery & Healing

Start with: BPC-157, TB-500, or Wolverine Blend

BPC-157 targets the specific injury site. TB-500 works body-wide to reduce inflammation and promote flexibility. The Wolverine Blend combines both in one vial for maximum recovery coverage.

Weight Management / GLP-1

Start with: Semaglutide, Tirzepatide, or Retatrutide

All three suppress appetite and reset metabolism. Semaglutide targets one receptor. Tirzepatide targets two. Retatrutide targets three — strongest effect, newest compound. Start with Semaglutide if new, escalate for more.

Growth Hormone Support

Start with: Sermorelin, Tesamorelin, or CJC-1295

These stimulate your body to produce its own GH — they don't replace it. Sermorelin is the gentlest daily option. Tesamorelin specifically targets visceral belly fat. CJC-1295 provides sustained GH elevation for body recomposition.

Energy & Cellular Health

Start with: NAD+, Glutathione

NAD+ is the fuel your mitochondria run on — restoring levels improves energy, mental clarity, and DNA repair. Glutathione is the body's master antioxidant for detox, immune support, and cellular protection.

Anti-Aging / Skin

Start with: KLOW Blend, BPC-157

The KLOW Blend (GHK-Cu + KPV + BPC-157 + TB-500) covers collagen production, inflammation, gut healing, and systemic recovery in one pen. BPC-157 alone is excellent for gut repair and skin healing.

Not sure? Start here.

Email us: info@apxlabspeptides.com

Tell us your goal and we'll point you to the right compound. We can't give medical advice, but we can help you understand what researchers use each compound for.

All products are for research use only. Consult a licensed medical professional before any use. We can help you understand what's available — your practitioner guides the protocol.

02

Can I use more than one?

Single compound

One peptide, one job. Best if you have a clear primary goal or you're new. Easier to track what's working and isolate how your body responds.

Stack (2–3 compounds)

Different compounds target different systems — stacking gives broader coverage. Most experienced users run 2–3 at a time. Start with one, then add when you know it's working.

The most important thing is starting. One compound used consistently beats a complicated stack started and stopped. Begin simple, adjust from there.

03

How much do I use?

BPC-157 250–500 mcg/day Once or twice daily
TB-500 5–10 mg/week Split 2x per week
CJC-1295 + Ipamorelin 100–300 mcg each 2–3x daily (best before bed)
Semaglutide 0.25 mg → up to 2.4 mg Once weekly, titrate slowly
Tirzepatide 2.5 mg → up to 10 mg Once weekly, titrate slowly
Retatrutide 0.5 mg → up to 12 mg Once weekly, titrate slowly
NAD+ 500–1000 mg 2–3x weekly
Glutathione 600–1500 mg 2–3x weekly
Sermorelin 200–500 mcg/day Before bed, daily
Tesamorelin 1–2 mg/day Evening, daily
04

How much do I order?

First time

Start with a single vial at the smallest available size. Gives you 4–6 weeks at standard research dosing — enough to observe your response and confirm what's working before ordering more.

Running a full cycle

A larger vial (10mg, 20mg, or 30mg depending on the compound) covers 6–12 weeks at a time. Once you've confirmed the compound works for you, this is better value with fewer orders.

Using a stack

Order one vial per compound and start together. Most stacks run 4–8 weeks, followed by a 2–4 week break before cycling again. The pen format is ideal for daily-use compounds in a stack.

Find Your Compound

✓ = primary use    · = secondary use

Compound Fat Loss Recovery Performance Longevity Mood / Focus
Retatrutide ·
Tirzepatide ·
Semaglutide
BPC-157 ·
TB-500 ·
CJC-1295 + Ipamorelin · · ·
Tesamorelin ·
NAD+ · · ·
Glutathione ·
KLOW Blend
Wolverine Blend · ·

Still not sure which compound is right?

Email us your goal and we'll help you understand what researchers use for your situation. We'll point you in the right direction.

Email Us →

info@apxlabspeptides.com

Peptide FAQ

Every question a first-timer asks, answered in plain language.

Getting Started

Peptides are short chains of amino acids — the same building blocks proteins are made of. Research peptides are synthetic versions of signaling molecules your body already produces naturally. They work by telling your body to do something it already knows how to do — heal, burn fat, produce growth hormone — just more efficiently or at a higher rate. They're not drugs you're adding from the outside; they're signals your biology already understands.

Most research peptides have favorable profiles compared to pharmaceutical drugs, particularly at research-supported doses. Many are closely modeled on natural signaling molecules the body already produces. Each compound is different — BPC-157 and NAD+ have very wide margins; GLP-1 agonists have well-understood effects to manage through gradual dosing. Most people find the experience very manageable when they start low, titrate slowly, and pay attention to how their body responds.

For research purposes, no prescription is required to purchase research peptides in the US. Research peptide suppliers operate separately from the pharmaceutical system. If you want to use them under medical supervision — which is always the better option — you'd work with a physician who can prescribe compounded peptides through licensed pharmacies.

Peptide Standard tests every batch through independent third-party laboratories — Nutri Analytical and Freedom Diagnostics — using HPLC purity analysis, identity confirmation, and endotoxin screening. The actual Certificate of Analysis (COA) for your batch is available on request. You're not taking anyone's word for it — you can see the lab report with the purity number, the lab name, and the date.

Products

All three are GLP-1 class compounds for fat loss and metabolic health — they differ by how many receptors they hit. Semaglutide targets one receptor (GLP-1) and averages 10–15% weight loss in trials. Tirzepatide hits two (GLP-1 + GIP) and averages 15–22%. Retatrutide hits three (GLP-1 + GIP + glucagon) and averages 17–24%. More receptor targets = more fat-loss pathways = stronger effect, but also more to manage. Start with Semaglutide if you're new; step up if you want more.

Both are recovery peptides — they work through different mechanisms. BPC-157 is more site-specific: it targets the exact injury location and is especially useful for tendons, ligaments, and gut issues. TB-500 works body-wide: it promotes actin polymerization (how cells move and reorganize) and increases systemic flexibility and blood vessel growth. Together they cover both local and body-wide repair — that's why they're often combined in the Wolverine Blend.

Research grade means the compound is manufactured to a purity standard suitable for scientific and laboratory research — typically 98%+ purity, with testing to verify the compound's identity and concentration. It does not mean pharmaceutical grade (which involves additional manufacturing controls required for FDA-approved drugs). Peptide Standard targets 99%+ purity on every batch.

Tirzepatide is the most popular starting point for weight loss — stronger than Semaglutide, more manageable than Retatrutide, with a well-established titration protocol. Semaglutide is the best first-timer option (most studied, most predictable). Retatrutide is for people who've plateaued on the others or want maximum effect from the start.

The Wolverine Blend (BPC-157 + TB-500 pre-combined) is the most popular recovery option — it covers both local and systemic repair in one vial. For people with a specific single injury, standalone BPC-157 is often the starting point. KLOW Blend is the most comprehensive option — four recovery compounds including GHK-Cu and KPV — for people who want broad-spectrum healing.

These are growth hormone secretagogues — compounds researchers study for their potential to stimulate growth hormone release. They all work through the same general pathway (GHRH receptor) but with different profiles. Sermorelin has a short half-life and produces a single daily GH pulse, closely mimicking your body's natural rhythm. CJC-1295 has a 6–8 day half-life, so one weekly injection maintains sustained GH elevation. Tesamorelin is FDA-approved specifically for reducing visceral (belly) fat and has the most clinical data for that specific application.

NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in every living cell. It's the fuel that powers your mitochondria — your cells' power plants. NAD+ levels decline roughly 50% by age 50, which affects every energy-requiring function in the body. Researchers study NAD+ for applications in aging, neurological function, cellular health, and DNA repair. Injectable NAD+ delivers it directly to cells, bypassing the digestion issues that limit oral supplements like NMN or NR.

Using the Products

You need: bacteriostatic water (not regular water — it has a preservative that keeps the vial sterile for multi-use), insulin syringes (29–31 gauge, 0.5 inch), and alcohol swabs. The process: swab the vial top, draw your bacteriostatic water into a syringe, inject it slowly down the side of the vial (not directly onto the powder), swirl gently to dissolve, and refrigerate. The amount of water you add determines your concentration per unit — this is how you control your dose.

Most reconstituted peptides stored in bacteriostatic water in the refrigerator remain stable for 4–6 weeks. Keep them refrigerated, out of light, and never freeze a reconstituted vial — it degrades the peptide. Unreconstituted (dry powder) vials can be stored in the freezer for months to years.

Yes — many people run 2–3 compounds simultaneously. Common stacks: BPC-157 + TB-500 for recovery (or the Wolverine Blend), CJC-1295 + Ipamorelin for GH stimulation, NAD+ + GHK-Cu for anti-aging. The key principle: each compound should have a clear, distinct reason to be in your stack. Start with one compound, understand how your body responds, then add if needed.

It depends on the compound. Fast-acting: NAD+ energy effects often felt within hours of the first injection. BPC-157 pain reduction typically within 1–2 weeks. GLP-1 compounds: appetite changes in days, visible weight loss in 4–8 weeks, maximum effect over 3–6 months. GH peptides: sleep improvement in 1–2 weeks, body composition over 3–6 months. Match your expectations to the timeline of the compound you're using.

Ordering & Support

Email us at info@apxlabspeptides.com with what you're looking for. Include the compound name and size you want. We'll reply with availability, pricing, and next steps. You can also ask questions about which compound is right for your goal — we're happy to help you figure that out before you buy.

Yes — request the COA (Certificate of Analysis) for any compound at any time by emailing info@apxlabspeptides.com. You can also view available COAs on the About page. Every batch we stock has been independently tested — we publish the results and will always provide your batch-specific COA on request.

If you receive something damaged, incorrect, or different from what you ordered, contact us immediately at info@apxlabspeptides.com and we'll make it right. For questions about your specific order or guarantee terms, reach out directly — we handle these case by case and stand behind our products.

Contact us at info@apxlabspeptides.com for shipping availability to your location. We'll let you know what's possible for your area.

Email is the best way to reach us: info@apxlabspeptides.com. Whether you have a question about a compound, want to place an order, or need the COA for your batch — that's the right address. We aim to respond within one business day.

The Basics

No — completely different mechanism. Steroids are synthetic hormones (typically testosterone derivatives) that directly replace or mimic sex hormones — they flood your body with a hormone signal and suppress your own production. Peptides are signaling molecules that work by stimulating your body's own systems. Most peptides don't suppress natural hormone production; they either mimic natural processes or trigger the body to do more of what it already does.

Research peptides are sold for in-vitro (lab) research and scientific investigation rather than as approved pharmaceutical drugs. This designation exists because these compounds have not completed the full FDA approval process required to be marketed as drugs for human use. The compounds themselves may have extensive scientific literature — some are FDA-approved in other countries, some are in human clinical trials — but they're classified and sold as research chemicals in the US market.

In the US, most research peptides occupy a legal gray area — they're not controlled substances (unlike steroids, which are Schedule III), but they're also not FDA-approved drugs. They can be legally purchased and possessed for research purposes. Legality can vary by country and specific compound. For research purposes, most peptides on this list are legally obtainable in the US.

Yes — most peptides are used by women and men alike. GLP-1 compounds, BPC-157, TB-500, NAD+, GHK-Cu, and most others are gender-neutral in their mechanisms. GH peptides (CJC-1295, Sermorelin) work in women as well, though women may be more sensitive to GH effects and typically use lower doses. Women who are pregnant or breastfeeding should hold off on research peptides during that period.

Safety & Storage

Varies by compound. With GLP-1 compounds, some people notice nausea or constipation early on, especially after dose increases — this settles once you stabilize. GH peptides may bring mild water retention at higher doses. BPC-157/TB-500 are well-tolerated with minimal effects reported. NAD+ can cause a warm, flushing sensation during injection that passes quickly. Minor redness at the injection site is normal. The most common issue is moving doses up too fast — slow titration keeps that from being a problem.

Most do not. GH peptides (CJC-1295, Sermorelin, Ipamorelin) stimulate your pituitary to make its own GH — they don't replace it externally, so the natural system stays online. GLP-1 compounds don't affect reproductive hormones. BPC-157, TB-500, and tissue repair peptides have no hormonal suppression effect. The stimulating vs. replacing distinction is key — peptides that stimulate your own production don't cause suppression.

Lyophilized (unreconstituted) peptides: store in a freezer (-20°C/-4°F) for long-term storage, or refrigerator (2–8°C/36–46°F) for short-term (up to a few months). Keep them out of light and heat. Once reconstituted: always refrigerate. Do not freeze a reconstituted vial — it degrades the peptide. Use within 4–6 weeks of reconstitution.

Cycling — running a compound for a set period, then taking a break — serves different purposes depending on the compound. For GH peptides, it helps maintain pituitary sensitivity. Not all peptides require cycling — BPC-157, NAD+, and Glutathione are often used more continuously. When cycling is recommended, typical patterns are 4–8 weeks on, 2–4 weeks off, or 3 months on, 1 month off for longer protocols.

Ready to Order?

Email us at info@apxlabspeptides.com — we'll confirm availability, answer questions, and get your COA ready.

Email to Order →

Precision-Grade Research Peptides You Can Trust

Peptide Standard supports researchers with quality-assured peptides and full transparency in every product.

Peptide Standard was built on one principle: researchers deserve to know exactly what they're working with. We source, test, and deliver research peptides with a level of rigor that most suppliers skip. Every batch goes through third-party laboratory testing before it ships. No shortcuts.

Quality Standard

Third-Party Tested

Every batch is independently verified by accredited laboratories using HPLC and LC-MS analysis. You get the actual numbers, not a marketing claim.

Purity Floor

99%+ Purity — Every Batch

Our testing standard is a commitment. We don't release product that doesn't meet it.

Documentation

Full Transparency

We publish our Certificates of Analysis. Request your batch COA anytime.

Research Only

Research-Grade Only

All products are designated for laboratory research use only. No shortcuts on sourcing, handling, or documentation.

Location

USA-Based Operations

We operate out of the United States with logistics and compliance built for research-grade distribution.

Support

Responsive Support

Questions about a compound, a COA, or an order? Reach us at info@apxlabspeptides.com.

Every batch is tested by independent, accredited laboratories before it ships. HPLC purity, identity confirmation, LC-MS mass analysis, and endotoxin screening — the actual numbers are in the COA, not a marketing claim.

Lab 1

Nutri Analytical Testing Laboratories

Anaheim, CA — HPLC purity analysis, UHPLC identification, endotoxin screening. Primary testing lab for vial compounds.

Lab 2

Freedom Diagnostics Testing

LC-MS mass confirmation and purity analysis. Primary testing lab for pen format compounds and blends.

Independent lab results for current inventory. Full COA documents available on request.

Compound Size Purity Assay Result Lab Date COA
BPC-157
BPC-157 2.5 mg 99.10% 2.77 mg/vial Nutri Analytical 03/02/2026 View COA
BPC-157 5 mg 99.19% 5.22 mg/vial Nutri Analytical 03/02/2026 View COA
BPC-157 10 mg 99.31% 10.24 mg/vial Nutri Analytical 03/02/2026 View COA
TB-500 (Thymosin Beta-4)
TB-500 2 mg 99.57% 2.16 mg/vial Nutri Analytical 03/02/2026 View COA
TB-500 5 mg 99.22% 5.78 mg/vial Nutri Analytical 03/02/2026 View COA
TB-500 10 mg Confirmed 10.31 mg/vial Nutri Analytical 03/02/2026 View COA
BPC-157 + TB-500 Combo (Wolverine Blend)
Wolverine Blend 40 mg combo 99.46% BPC-157: 10.93 mg / TB-500: 21.50 mg Freedom Diagnostics 04/18/2026 View COA
CJC-1295 w/ DAC
CJC-1295 w/ DAC 2 mg 99.14% 2.21 mg/vial Nutri Analytical 03/02/2026 View COA
Semaglutide (GLP-1S)
Semaglutide 2 mg 99.31% 2.21 mg/vial Nutri Analytical 03/02/2026 View COA
Semaglutide 10 mg 99.67% 10.35 mg/vial Nutri Analytical 03/02/2026 View COA
Tirzepatide (GLP-1T)
Tirzepatide 5 mg 99.44% 5.07 mg/vial Nutri Analytical 03/02/2026 View COA
Tirzepatide 10 mg 98.99% 10.98 mg/vial Freedom Diagnostics 03/25/2026 View COA
Tirzepatide 30 mg 99.18% 31.14 mg/vial Nutri Analytical 03/02/2026 On Request
Tirzepatide 40 mg 99.90% 38.98 mg avg Freedom Diagnostics 04/18/2026 On Request
Tirzepatide 60 mg 99.28% 60.22 mg/vial Nutri Analytical 03/02/2026 On Request
Retatrutide (GLP-3R)
Retatrutide 10 mg 99.64% 10.20 mg/vial Nutri Analytical 03/02/2026 View COA
Retatrutide 20 mg 99.23% 20.22 mg/vial Nutri Analytical 03/02/2026 View COA
Retatrutide 40 mg 99.93% 38.13 mg avg Freedom Diagnostics 04/18/2026 On Request
Sermorelin
Sermorelin 2 mg 99.21% 2.62 mg/vial Nutri Analytical 03/02/2026 View COA
Sermorelin 5 mg 99.33% 5.60 mg/vial Nutri Analytical 03/02/2026 View COA
Tesamorelin
Tesamorelin 2 mg 99.61% 2.21 mg/vial Nutri Analytical 03/02/2026 View COA
Tesamorelin 5 mg 99.15% 5.19 mg/vial Nutri Analytical 03/02/2026 View COA
Tesamorelin 10 mg 99.62% 10.22 mg/vial Nutri Analytical 03/02/2026 View COA
NAD+
NAD+ 500 mg 99.17% 502.3 mg/vial Nutri Analytical 03/02/2026 View COA
NAD+ 1000 mg 99.80% 1013.45 mg avg Freedom Diagnostics 04/18/2026 On Request
NAD+ & Vitamin B12
NAD+ & B12 1000 mg / 8.31 mg 99.79% NAD+: 1077 mg / B12: 8.31 mg Freedom Diagnostics 04/18/2026 On Request
Glutathione
Glutathione 1000 mg 98.44% 1056 mg avg Freedom Diagnostics 04/18/2026 On Request
KLOW Blend (GHK-Cu / KPV / BPC-157 / TB-500)
KLOW Blend 80 mg combo 99.79% GHK-Cu: 54.24 mg / KPV: 8.16 mg / BPC-157: 9.27 mg / TB-500: 8.20 mg Freedom Diagnostics 04/18/2026 On Request

All testing performed by independent accredited laboratories. Results are batch-specific. Request COA for your order.

Request a Batch Analysis

Want to see the Certificate of Analysis for your specific order? Email us with your order details and we'll send you the lab report for your batch.

Request COA

Get in Touch

info@apxlabspeptides.com (949) 579-2066

Questions about compounds, orders, or COA requests — email is the fastest way to reach us.

All products are designated for research use only. Not for human consumption.

All products are designated for research use only. Not for human consumption. Peptide Standard sells research-grade compounds for scientific research purposes only.