The peptide reference catalog,
built for research transparency.

Long-acting GLP-1 receptor agonist for glycemic control and weight management.

Dual GIP / GLP-1 receptor agonist with industry-leading weight-loss endpoints.

Investigational triple agonist (GIP / GLP-1 / glucagon) in late-stage trials.

Long-acting amylin analog studied alongside semaglutide as CagriSema.

Synthetic gastric pentadecapeptide investigated for tendon, ligament, and GI repair.

Synthetic fragment of thymosin β4 studied for cell migration and tissue repair.

Endogenous copper-binding tripeptide widely studied in skin and hair biology.

Copper-binding tripeptide (Ala-His-Lys) studied for hair-follicle stimulation and dermal repair.

A glycoprotein hormone that drives red-blood-cell production — a recombinant biologic famous in medicine for treating anemia and infamous in sport for blood doping.

The active fragment of parathyroid hormone — a recombinant peptide that builds bone, exploiting a paradox: the same hormone resorbs bone when continuous, but builds it when pulsed.

Recombinant 191-amino-acid human growth hormone — a folded protein biologic identical in sequence to pituitary GH, not a synthetic research peptide.

The downstream effector of growth hormone — a 70-amino-acid recombinant protein, structurally a cousin of proinsulin, that carries out most of GH’s growth signal.

A long-acting modified IGF-1 analog with reduced IGFBP binding and prolonged systemic activity.

A splice variant of IGF-1 expressed after muscle damage; studied for satellite-cell activation.

Modified GHRH(1-29) analog with short plasma half-life.

Long-acting GHRH analog with a Drug Affinity Complex for albumin binding.

Selective ghrelin receptor agonist (GHRP) with minimal cortisol / prolactin release.

GHRH analog FDA-approved for HIV-associated lipodystrophy.

Truncated GHRH(1-29) — historically the first GHRH analog approved by the FDA.

Synthetic hexapeptide GHRP with potent GH-releasing activity.

The body’s brake on muscle growth — a TGF-β-family growth factor whose inhibition is the leading strategy to preserve muscle, including during GLP-1 weight loss.

A natural myostatin and activin antagonist — by neutralizing the muscle brake it is one of the most potent pro-muscle factors studied, and a doping and gene-therapy flashpoint.

An anti-myostatin antibody (Regeneron) now studied in obesity combinations to cut lean-mass loss and deepen fat loss alongside semaglutide.

An anti-activin-A antibody (Regeneron) — closest to approval of the axis (FOP), and a partner in obesity muscle-preservation combinations.

Mitochondrially-encoded peptide with reported insulin-sensitizing activity.

Mitochondria-targeted cardiolipin-binding tetrapeptide.

Synthetic tetrapeptide investigated for telomerase activity and circadian effects.

Thymus-derived polypeptide complex — the founding tissue bioregulator (Cytomax) studied for immune restoration.

Synthetic Lys-Glu dipeptide — the defined short-peptide successor to Thymalin, studied for immune and aging endpoints.

Synthetic Lys-Glu-Asp tripeptide studied as a vascular-axis bioregulator.

Synthetic Glu-Asp-Arg tripeptide studied as a brain/CNS bioregulator.

Synthetic Ala-Asp-Glu-Leu tetrapeptide studied as a respiratory-tissue bioregulator.

Synthetic Ala-Glu-Asp-Arg tetrapeptide studied as a cardiac-tissue bioregulator.

Synthetic Lys-Glu-Asp-Trp tetrapeptide studied as a pancreas-tissue bioregulator.

Russian synthetic ACTH(4-10) analog studied for nootropic and neuroprotective effects.

Synthetic heptapeptide analog of tuftsin investigated as an anxiolytic.

Endogenous nonapeptide first isolated for its sleep-promoting properties.

Synthetic cyclic analog of α-MSH; non-selective melanocortin receptor agonist.

MC1R-selective α-MSH analog; FDA-approved (Scenesse) for photoprotection in erythropoietic protoporphyria.

Melanocortin-4 receptor agonist FDA-approved for HSDD in premenopausal women.

C-terminal decapeptide fragment of kisspeptin; potent GnRH secretagogue.

A heterodimeric glycoprotein hormone — two different glycosylated subunits — that mimics the LH surge; the pregnancy hormone, also the subject of a debunked diet.

A 9-amino-acid cyclic hormone of labor and bonding — historically the first peptide hormone ever chemically synthesized, and the most over-marketed "love hormone."

A heterodimeric glycoprotein gonadotropin that drives follicle growth and spermatogenesis — the workhorse of IVF stimulation, and a sister molecule to HCG and LH.

Thymus-derived 28-amino-acid peptide approved in many countries as an immunomodulator.

Human cathelicidin antimicrobial peptide active across bacteria, fungi, and viruses.

Anti-inflammatory C-terminal tripeptide of α-MSH.

C-terminal hGH fragment (177–191) historically investigated for lipolysis.

Small-molecule NNMT inhibitor (often catalogued alongside peptides).

Essential redox cofactor central to mitochondrial bioenergetics and sirtuin activity.

The body’s water-conservation hormone — a 9-amino-acid posterior-pituitary peptide, near-twin of oxytocin, used as a vasopressor and (as desmopressin) for diabetes insipidus.

The universal "off switch" — a cyclic hormone that inhibits growth hormone, insulin, glucagon, and gut secretions; its analog octreotide is the workhorse drug.

A calcium-lowering hormone of the thyroid C-cells — the salmon form, far more potent than human, is used for hypercalcemia, Paget’s disease, and bone pain.

The pancreas’s second satiety hormone — co-secreted with insulin from the beta cell; its stabilized analog pramlintide treats diabetes, and the class now drives a new wave of obesity drugs.

The pituitary’s command to the adrenal gland — a 39-amino-acid hormone that drives cortisol release; its 1–24 fragment is the standard test of adrenal function.

The first hormone ever discovered — the 1902 gut peptide that coined the word "hormone"; today a diagnostic agent for the pancreas.

The only hormone that makes you hungry — a stomach peptide, uniquely fatty-acid-modified, that drives appetite and also releases growth hormone.