Look up any peptide.

Synthetic peptide studied in animal models of connective-tissue and gastrointestinal injury.

Naturally occurring peptide investigated in cell-migration and cardiovascular research.

Copper-binding tripeptide examined in dermatological and wound-model studies.

GLP-1 receptor agonist with an extensive metabolic and endocrine clinical literature.

Immune-signaling peptide studied in immunological contexts.

Growth-hormone-releasing analog. Corpus entry planned.

Selective GH secretagogue. Corpus entry planned.

Melanocortin analog studied in dermatological research. Corpus entry planned.

Cellular coenzyme sold in the longevity market as precursors (NMN, NR) and IV drips — not a peptide.

Alpha-MSH-derived anti-inflammatory tripeptide studied mainly in preclinical gut and skin inflammation models.

A 16-amino-acid mitochondrial-derived peptide studied as a metabolic regulator and exercise-linked signaling molecule.

A human growth hormone fragment (residues 176-191) once developed for fat loss that failed its pivotal obesity trial and is unapproved.

A myostatin-binding follistatin isoform studied for muscle growth, largely preclinical and sold gray-market with no approved product.

A laboratory-made, longer-acting IGF-1 analogue sold as a research chemical and marketed in gray-market channels for muscle growth.

The active fragment of the only human cathelicidin, an endogenous host-defense peptide with antimicrobial, immunomodulatory, and wound-healing activity.

A 1970s-era nine–amino-acid peptide studied for sleep and stress, with old, small, and inconsistent evidence and no approved product.

An endogenous reproductive-axis peptide fragment under early clinical research that stimulates the body's own GnRH and downstream fertility hormones.

Mitochondria-targeting tetrapeptide, the first FDA-approved therapy for a mitochondrial disease (Barth syndrome), also sold gray-market as SS-31.

An endogenous 28-amino-acid signaling peptide marketed off-label for inflammation and 'CIRS,' with no FDA-approved product for those uses.

An endogenous antioxidant tripeptide whose injectable and IV forms are marketed for skin lightening and wellness despite regulator safety warnings.