Peptide library

Find your way around peptides

Search a name you’ve heard, or browse by group. More groups and profiles are on the way.

For research use only.

Not sure where to start?

Good places to start

01BPC-157BPC-15A short, lab-made peptide (15 amino acids) first found in human stomach juice.02TB-500A short, lab-made piece of thymosin beta-4, a peptide that cells release after an injury.03KPVThree-amino-acid piece of alpha-MSH, studied in mice04WolverineWolverine stackThe popular nickname for the BPC-157 and TB-500 pairing.
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All peptides by group

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Weight andmetabolism4 PEPTIDESRecovery andrepair4 PEPTIDESGrowth hormone4 PEPTIDESGHRH PATHWAYGHRELIN PATHWAYEnergy andaging5 PEPTIDESSkin, hair andimmune2 PEPTIDESMood, libidoand connection3 PEPTIDES

Weight and metabolism

Gut-hormone peptides studied for appetite, blood sugar and body weight.

3 peptides
TirzepatideGLP-1 + GIP (2 targets)often called GLP-2

Acts on two gut-hormone targets, GLP-1 and GIP. FDA approved as a prescription drug.

Level 4 of 4: Large human trialsRetatrutideGLP-1 + GIP + glucagonoften called GLP-3

Acts on three targets at once. Still in clinical trials, not approved.

Level 4 of 4: Large human trialsAdipotideFat-targeting peptide

Homes to blood vessels in white fat; studied in mice and monkeys.

Level 1 of 4: Lab and animal only

Recovery and repair

Peptides studied for healing tendons, muscle, skin and gut lining.

3 peptides · 3 blends
BPC-15715-amino-acid peptideBPC-15Bepecin

A short, lab-made peptide (15 amino acids) first found in human stomach juice.

Level 2 of 4: Early human reportsTB-500Thymosin beta-4 fragment

A short, lab-made piece of thymosin beta-4, a peptide that cells release after an injury.

Level 1 of 4: Lab and animal onlyKPVAlpha-MSH fragment

Three-amino-acid piece of alpha-MSH, studied in mice

Level 1 of 4: Lab and animal onlyWolverineBlend of BPC-157 + TB-500BlendWolverine stack

The popular nickname for the BPC-157 and TB-500 pairing.

No studies of the blendSee each peptide’s levelGLOWBlend of GHK-Cu + BPC-157 + TB-500BlendGLOW blend

GHK-Cu, BPC-157 and TB-500 in one vial

Good to know: GLOW has no fixed recipe.[1] Read each peptide’s own profile for its evidence and cautions.

No studies of the blendSee each peptide’s levelKLOWBlend of GHK-Cu + BPC-157 + TB-500 + KPVBlend

GLOW plus KPV, four peptides in one vial

Good to know: Like GLOW, KLOW has no fixed recipe.[1] Read each peptide’s own profile for its evidence and cautions.

No studies of the blendSee each peptide’s level
Blend sources
  1. The Peptide Field (2026). KLOW peptide vs GLOW: ingredients, evidence, and FDA status. thepeptidefield.com.

Growth hormone

Peptides that nudge the body to release more of its own growth hormone.

4 peptides · 2 pathways

GHRH path

CJC-1295GHRH analog

Lab-made GHRH analog, with or without DAC

+ StackOften taken with Ipamorelin
Level 3 of 4: Small human trialsTesamorelinGHRH analogEgrifta

Full-length GHRH analog; FDA approved as Egrifta for HIV lipodystrophy.

Level 4 of 4: Large human trialsSermorelinGHRH(1-29) fragmentGeref

Short active piece of GHRH; formerly FDA approved as Geref.

Level 4 of 4: Large human trials

Ghrelin path

IpamorelinGhrelin mimic

Copies ghrelin to trigger a growth hormone pulse.

+ StackOften taken with CJC-1295
Level 3 of 4: Small human trials

Energy and aging

Mitochondria, cell energy and aging — including coenzymes studied alongside the mitochondrial peptides.

5 peptides
NAD+Coenzyme (not a peptide)Not a peptide

A natural coenzyme cells use to move electrons and power repair enzymes.

Level 3 of 4: Small human trialsMOTS-cMitochondrial-derived peptide

A 16-amino-acid peptide encoded in mitochondrial DNA.

+ StackOften taken with SS-31
Level 1 of 4: Lab and animal onlySS-31Mitochondria-targeted peptideElamipretide

A short peptide (elamipretide) that binds cardiolipin on the inner mitochondrial membrane.

+ StackOften taken with MOTS-c
Level 4 of 4: Large human trialsEpithalonPineal tetrapeptideEpitalon

Four-amino-acid peptide (AEDG) from pineal research, studied for aging.

Level 1 of 4: Lab and animal onlyGlutathioneAntioxidant tripeptideGSH

Natural thiol peptide cells make for redox balance and detoxification.

Level 3 of 4: Small human trials

Skin, hair and immune

Studied for collagen, skin repair and immune signalling.

2 peptides
GHK-CuCopper-binding tripeptideCopper peptide

A tiny copper-binding peptide found naturally in blood plasma.

Level 1 of 4: Lab and animal onlyThymosin Alpha-1Immune-signaling peptideThymalfasin

A 28-amino-acid thymus peptide (thymalfasin) studied in infections.

Level 3 of 4: Small human trials

Mood, libido and connection

Signals tied to bonding, desire and reproductive hormones.

3 peptides
PT-141Melanocortin receptor agonistBremelanotide

Lab-made melanocortin agonist; FDA approved as Vyleesi for HSDD.

Level 4 of 4: Large human trialsOxytocinPeptide hormone

A peptide hormone your body already makes.

Level 4 of 4: Large human trialsKisspeptinKISS1 gene productMetastin

KISS1 gene peptides that sit upstream of GnRH release.

Level 3 of 4: Small human trials
Read once, use everywhere

How we rate the evidence

Our scale has four levels, from weakest to strongest evidence.

Level 1Lab and animal onlyCells or animals, not people
Level 2Early human reportsA few people, no comparison group
Level 3Small human trialsControlled studies in modest numbers of people
Level 4Large human trialsBig controlled studies that can support approval