Peptide Encyclopedia
Science-backed monographs on 19+ peptides — covering mechanisms of action, research summaries, safety profiles, and FDA regulatory status.
All content is for informational purposes only. Not medical advice. Consult a healthcare provider before using any peptide.
Showing 19 peptides
AOD-9604
AOD-9604 is a synthetic peptide fragment derived from the C-terminus of human growth hormone (hGH). It was originally developed by Metabolic Pharmaceuticals as an anti-obesity drug candidate and has been studied for fat metabolism and cartilage repair.
BPC-157
BPC-157 (Body Protection Compound 157) is a synthetic pentadecapeptide derived from a naturally occurring protein found in gastric juice. It has been extensively studied for its remarkable tissue-healing and cytoprotective properties.
CJC-1295
CJC-1295 is a synthetic analogue of growth hormone-releasing hormone (GHRH) designed for extended half-life. It stimulates the pituitary gland to release growth hormone and is often combined with ipamorelin for synergistic effects.
Collagen Peptides
Collagen peptides (also called hydrolyzed collagen or collagen hydrolysate) are short bioactive peptides derived from the enzymatic hydrolysis of collagen proteins. They are among the most widely studied and consumed peptide supplements, with clinical evidence supporting effects on skin elasticity, joint health, and bone density.
Epithalon
Epithalon (also spelled Epitalon) is a synthetic tetrapeptide (Ala-Glu-Asp-Gly) derived from the naturally occurring polypeptide epithalamin, produced by the pineal gland. It is one of the most studied longevity peptides, with research focusing on its ability to activate telomerase and extend telomere length.
GHK-Cu
GHK-Cu (copper peptide GHK) is a naturally occurring tripeptide with a high affinity for copper ions. Found in human plasma, saliva, and urine, it plays a key role in skin remodeling, wound healing, and anti-aging processes.
Ipamorelin
Ipamorelin is a selective growth hormone secretagogue (GHS) and ghrelin receptor agonist. It stimulates GH release with high selectivity, producing fewer off-target hormonal effects than older GH secretagogues.
Kisspeptin
Kisspeptin is a neuropeptide produced in the hypothalamus that acts as a critical regulator of the reproductive axis. By stimulating gonadotropin-releasing hormone (GnRH) neurons, kisspeptin controls the release of LH and FSH and plays essential roles in puberty onset, fertility, and sex hormone regulation.
KPV
KPV is a tripeptide (Lys-Pro-Val) derived from the C-terminal sequence of alpha-melanocyte-stimulating hormone (α-MSH). It is studied for its potent anti-inflammatory properties, particularly in gastrointestinal conditions and skin inflammation, while retaining the immunomodulatory effects of α-MSH without melanotropic side effects.
MOTS-c
MOTS-c (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a mitochondria-derived peptide encoded in mitochondrial DNA. It regulates metabolic homeostasis, insulin sensitivity, and cellular stress responses, and is being studied for its role in aging and longevity.
PT-141 (Bremelanotide)
PT-141, also known as Bremelanotide, is a melanocortin receptor agonist originally developed from Melanotan II. It is FDA-approved for hypoactive sexual desire disorder (HSDD) in premenopausal women and studied for male sexual dysfunction.
Selank
Selank is a synthetic heptapeptide developed in Russia by the Institute of Molecular Genetics. It is an anxiolytic and nootropic peptide derived from tuftsin, with evidence for reducing anxiety and improving cognitive function without sedation.
Semaglutide
Semaglutide is an FDA-approved GLP-1 receptor agonist used for type 2 diabetes and chronic weight management. Sold under the brand names Ozempic, Wegovy, and Rybelsus, it has become one of the most prescribed medications in the world.
Semax
Semax is a synthetic heptapeptide derived from the ACTH(4-7) fragment of adrenocorticotropic hormone. Developed in Russia, it has been studied for neuroprotective, nootropic, and stroke-recovery applications.
Sermorelin
Sermorelin (GHRH 1-29) is a synthetic analogue of the first 29 amino acids of human growth hormone-releasing hormone. It stimulates the pituitary gland to produce and release growth hormone through the body's own regulatory pathway and has the longest clinical history of any growth hormone-releasing peptide, including a former FDA approval.
TB-500
TB-500 is a synthetic peptide derived from Thymosin Beta-4, a naturally occurring protein involved in actin regulation, cell migration, and tissue repair. It has been studied for accelerating healing of injuries, particularly in athletic contexts.
Tesamorelin
Tesamorelin is an FDA-approved synthetic analogue of growth hormone-releasing hormone (GHRH) indicated for the reduction of excess abdominal fat (lipodystrophy) in HIV-positive patients on antiretroviral therapy. It is the only FDA-approved GHRH analogue currently on the U.S. market.
Thymosin Alpha-1
Thymosin Alpha-1 (Tα1) is a 28-amino acid peptide derived from the thymus gland that plays a central role in immune modulation. It enhances T-cell function and has been approved in multiple countries for treating chronic infections and as a vaccine adjuvant.
Tirzepatide
Tirzepatide is an FDA-approved dual GIP/GLP-1 receptor agonist developed by Eli Lilly. Sold as Mounjaro (diabetes) and Zepbound (obesity), it produces greater weight loss than semaglutide in head-to-head studies.
No peptides found in this category.
Don't see a peptide?
Help us expand the encyclopedia. Submit a suggestion and our editorial team will review it for a future monograph.
Suggest a Peptide →Medical Disclaimer: All information on this site is for educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment recommendations. Peptide research is ongoing; some compounds have not been evaluated in human clinical trials. Always consult a qualified healthcare provider before considering any peptide therapy.