Editorial peptide pages backed by citations. A curated vendor directory with real, moderated reviews. Transparent ranking — no pay-to-play on the encyclopedia side.
Encyclopedia
A starting point for new readers — broad, well-studied compounds.
Longevity
Humanin is a small endogenous mitochondrial-derived peptide with a remarkable preclinical portfolio in apoptosis resistance, neuroprotection, metabolic regulation, and ischemia-reperfusion injury. Translated human clinical evidence remains very limited.
Other Research Peptides
Protirelin is synthetic thyrotropin-releasing hormone (TRH). Historically used as a diagnostic pituitary-thyroid challenge agent. Current U.S. public labeling on DailyMed reflects a compounded product, and PubChem notes protirelin is not currently available in an FDA-approved product.
Metabolic
5-Amino-1MQ (5-amino-1-methylquinolinium) is not a peptide but is frequently marketed alongside peptides. In the reviewed sources it remains experimental, with no approved human indication and no human clinical efficacy program that could be verified from primary sources.
Longevity
NAD+ is a coenzyme — not a peptide. It is central to redox metabolism and serves as a substrate for enzymes tied to DNA repair, stress responses, and aging biology, including PARPs and sirtuins. Included here for completeness from the source dossier. The "longevity" reputation is well ahead of the controlled clinical evidence.
Growth Hormone Secretagogues
GHRP-6 is a synthetic GH secretagogue hexapeptide (His-D-Trp-Ala-Trp-D-Phe-Lys-NH2, MW 872.44 Da). In humans it is concentrated in endocrine challenge tests, diagnostic protocols, and mechanistic studies — particularly as part of the GHRH/GHRP-6 test for adult GH deficiency — rather than in therapeutic outcome trials.
Longevity
Epithalon (Epitalon, AEDG) is a synthetic tetrapeptide developed as a defined analog related to epithalamin, a pineal polypeptide preparation. The compound is best known in the Khavinson gerontology literature; modern independent human trial evidence is sparse, and the strongest data remain cellular.
Directory
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Community
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Editorial
Long-form context on how peptides work, how to evaluate vendors, and how to read the research.
A starter guide explaining what peptides are, how they work, and how they are used in research contexts.
8 min read · Editorial team
GuideA checklist-style guide for researchers comparing vendors: transparency, reviews, lab testing, and shipping.
10 min read · Editorial team
GuidePractical guidance on storing peptides and reconstituting lyophilized powder for research applications.
6 min read · Editorial team
GuideA practical primer on parsing the structure and limitations of peptide research literature.
12 min read · Editorial team