Peptide Index
Directory

Peptides

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35 entries

Metabolic

AOD-9604

AOD-9604 is a synthetic disulfide-bonded fragment of human growth hormone (residues 176-191 plus an N-terminal tyrosine) investigated as an anti-obesity agent that ultimately failed to demonstrate weight-loss efficacy in clinical trials and is not an approved medicine.

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Cosmetic & skin

Argireline (Acetyl Hexapeptide-8)

Argireline (Acetyl Hexapeptide-8) is a synthetic topical cosmetic peptide modeled on the N-terminus of SNAP-25 that is studied for its proposed inhibition of SNARE-mediated acetylcholine release; it is a cosmetic ingredient, not a drug.

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Healing & repair

BPC-157

A synthetic pentadecapeptide derived from a sequence found in gastric juice, studied across biochemical, cellular and preclinical repair research.

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Cognitive & nootropic

Cerebrolysin

Cerebrolysin is a porcine-brain-derived mixture of low-molecular-weight peptides and free amino acids studied for purported neurotrophic and neuroprotective effects, approved as a medicine in some countries but not by the US FDA.

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Growth hormone secretagogue

CJC-1295 (No DAC)

A modified GHRH(1-29) analogue without the drug-affinity complex, studied as a growth-hormone-releasing peptide in research settings.

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Cognitive & nootropic

Dihexa

Dihexa is a research-only, angiotensin IV-derived oligopeptide studied preclinically as a proposed potentiator of HGF/c-Met signaling and synaptogenesis, with no human data and a key mechanistic paper retracted in 2025.

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Cognitive & nootropic

DSIP

Delta sleep-inducing peptide, a naturally occurring nonapeptide studied as a neuromodulatory research peptide.

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Immune & longevity

Epitalon

Epitalon is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied in preclinical longevity research for reported effects on telomerase activity and pineal/circadian regulation, and is not an approved medicine.

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Cosmetic & skin

GHK-Cu

A naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) complexed with copper(II), widely studied in skin and matrix-remodelling research.

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Growth hormone secretagogue

GHRP-2

GHRP-2 (pralmorelin) is a synthetic hexapeptide growth hormone secretagogue that activates the ghrelin receptor (GHS-R1a) to stimulate growth hormone release, approved only in Japan as a single-dose diagnostic agent and not FDA-approved.

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Growth hormone secretagogue

GHRP-6

GHRP-6 is a synthetic hexapeptide growth hormone secretagogue and ghrelin-receptor (GHS-R1a) agonist studied in research settings, with no approved medical use.

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Blends & stacks

Glow Stack

A research blend of BPC-157, TB-500 and GHK-Cu, metered from a single 3 mL pen cartridge.

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Growth hormone secretagogue

Hexarelin

Hexarelin (examorelin) is a synthetic hexapeptide growth hormone secretagogue and ghrelin-receptor (GHSR) agonist that reached Phase II trials but was never approved as a medicine.

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Immune & longevity

Humanin

Humanin is a 24-residue mitochondrial-derived peptide studied in preclinical research for cytoprotective, anti-apoptotic and longevity-related signaling; it is not an approved medicine.

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Growth hormone secretagogue

Ipamorelin

A selective pentapeptide growth-hormone secretagogue (GHRP) studied for its action on the ghrelin / GH-secretagogue receptor.

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Other

Kisspeptin-10

Kisspeptin-10 (KP-10) is an investigational decapeptide and the minimal active fragment of kisspeptin/metastin that activates the KISS1R (GPR54) receptor to stimulate GnRH and downstream LH/FSH release in the reproductive hormone axis.

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Blends & stacks

Klow Stack

A research blend of GHK-Cu, KPV, BPC-157 and TB-500, metered from a single 3 mL pen cartridge.

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Healing & repair

KPV

The C-terminal tripeptide of α-MSH (Lys-Pro-Val), studied for anti-inflammatory signalling in research models.

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Immune & longevity

LL-37

LL-37 is the only human cathelicidin antimicrobial peptide, a 37-residue host-defense peptide studied in research for its broad antimicrobial and immunomodulatory activity, with no approved therapeutic indication.

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Cosmetic & skin

Melanotan II

Melanotan II is a synthetic cyclic peptide and non-selective melanocortin-receptor agonist studied for pigmentation, which is unlicensed, sold illicitly, and the subject of UK MHRA safety warnings.

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Metabolic

MOTS-c

A mitochondrial-derived peptide studied in metabolic and exercise-physiology research.

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Other

Oxytocin

Oxytocin is an endogenous nonapeptide hormone and FDA-approved injectable medicine (Pitocin) that acts on the oxytocin receptor to stimulate uterine contraction and is also widely studied for central roles in social behavior.

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Other

PT-141

Bremelanotide, a cyclic melanocortin-receptor agonist peptide and analogue of α-MSH, studied in research settings.

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Metabolic

Retatrutide

Retatrutide (LY3437943) is an investigational once-weekly triple GIP/GLP-1/glucagon receptor agonist peptide developed by Eli Lilly and studied in Phase 3 trials for obesity and type 2 diabetes; it is not approved by any regulator.

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Cognitive & nootropic

Selank

Selank is a synthetic tuftsin-derived heptapeptide studied for anxiolytic and nootropic activity and registered as a prescription anxiolytic in Russia, though it is not FDA-approved.

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Metabolic

Semaglutide

Semaglutide is a long-acting GLP-1 receptor agonist and licensed prescription medicine used for type 2 diabetes and chronic weight management.

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Cognitive & nootropic

Semax

Semax is a synthetic ACTH(4-10) heptapeptide analogue, approved as a nootropic/neuroprotective prescription drug in Russia but not approved by the FDA or EMA, studied mainly in rodents for BDNF/NGF-mediated effects on cognition and ischaemic injury.

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Growth hormone secretagogue

Sermorelin

Sermorelin is a synthetic GHRH(1-29) analogue and growth hormone secretagogue that stimulates the pituitary to release endogenous growth hormone; it was once FDA-approved as Geref but is now discontinued and only available as a compounded preparation.

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Cosmetic & skin

SNAP-8 (Acetyl Octapeptide-3)

SNAP-8 (Acetyl Octapeptide-3) is a synthetic, topically applied cosmetic peptide that is reported to reduce the appearance of expression lines by competitively interfering with SNARE-complex-mediated neurotransmitter release.

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Immune & longevity

SS-31 (Elamipretide)

SS-31 (elamipretide) is a mitochondria-targeting tetrapeptide that binds cardiolipin in the inner mitochondrial membrane and, in September 2025, became the first such peptide to receive FDA accelerated approval (as FORZINITY) for the ultra-rare Barth syndrome while remaining investigational for other indications.

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Healing & repair

TB-500

A synthetic peptide related to thymosin β4, studied as a research tool in cell-motility and tissue-repair models.

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Growth hormone secretagogue

Tesamorelin

A stabilised GHRH analogue studied as a growth-hormone-releasing peptide in research contexts.

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Immune & longevity

Thymosin alpha-1

Thymosin alpha-1 (thymalfasin) is a 28-amino-acid acetylated thymic peptide that acts as an immunomodulator and is marketed as the prescription drug Zadaxin in many countries, though it is not FDA-approved.

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Metabolic

Tirzepatide

Tirzepatide is a synthetic, fatty-acylated 39-residue peptide that acts as a dual GIP and GLP-1 receptor agonist and is an FDA-approved prescription medicine (Mounjaro/Zepbound).

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Blends & stacks

Wolverine Stack

A research blend combining BPC-157 and TB-500, metered from a single 3 mL pen cartridge.

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