The catalog
Every peptide hormone in one index. Search by molecule, receptor, source, or class, filter by signaling family, and open any entry for the full reference — identity, mechanism, and the evidence behind it.
55 molecules
Amylin · IAPP
Co-secreted with insulin; the satiety and gastric-emptying partner.
Exenatide
A GLP-1 receptor agonist derived from Gila monster venom (exendin-4).
Glucagon
The counter-regulatory hormone that raises blood glucose.
Glucagon-like peptide-1 · GLP-1
The incretin that anchors the modern metabolic toolkit.
Glucose-dependent insulinotropic polypeptide · GIP
The second incretin, with distinct adipose and CNS biology.
Insulin
The anabolic master switch for glucose uptake and storage.
Liraglutide
A once-daily GLP-1 receptor agonist; an earlier acylated analog.
Retatrutide
An investigational GIP/GLP-1/glucagon triple receptor agonist.
Semaglutide
A long-acting GLP-1 receptor agonist engineered for once-weekly dosing.
Tirzepatide
A dual GIP and GLP-1 receptor agonist — the first of the co-agonists.
Ghrelin
Stomach-derived hunger signal that also amplifies GH pulses.
Growth hormone · GH
The pulsatile pituitary driver of growth and metabolism.
Growth-hormone-releasing hormone · GHRH
The hypothalamic signal that tells the pituitary to release GH.
Insulin-like growth factor 1 · IGF-1
The hepatic mediator of growth hormone's anabolic effects.
Lanreotide
A depot somatostatin analog, similar in action to octreotide.
Octreotide
A long-acting somatostatin analog used to suppress GH and other hormones.
Pasireotide
A broader-spectrum somatostatin analog hitting more receptor subtypes.
Somatostatin · SST
The brake on the growth-hormone axis — and much else.
Adrenocorticotropic hormone · ACTH
The melanocortin that drives adrenal cortisol synthesis.
Alpha-melanocyte-stimulating hormone · α-MSH
The core melanocortin ligand — pigment, appetite, inflammation.
Corticotropin-releasing hormone · CRH
The apex of the HPA stress axis.
Oxytocin
Parturition, lactation, and social bonding from a 9-residue peptide.
Selank
A synthetic anxiolytic/nootropic peptide derived from tuftsin.
Thyrotropin-releasing hormone · TRH
The hypothalamic trigger for the thyroid axis.
Vasopressin (antidiuretic hormone) · ADH
Water retention and vascular tone — osmotic control.
Cholecystokinin · CCK
Triggers gallbladder contraction, pancreatic enzymes, and satiety.
Motilin
Paces the migrating motor complex between meals.
Peptide YY · PYY
A post-meal satiety signal from intestinal L-cells.
Secretin
Stimulates pancreatic bicarbonate to neutralize gastric acid.
Cetrorelix
A GnRH antagonist — immediate suppression with no flare.
Follicle-stimulating hormone · FSH
Drives follicular development and spermatogenesis.
Gonadotropin-releasing hormone · GnRH
The pulsatile hypothalamic driver of the reproductive axis.
Goserelin
A depot GnRH agonist; same flare-then-suppression mechanism as leuprolide.
Human chorionic gonadotropin · hCG
LH-like hormone that sustains the corpus luteum in early pregnancy.
Kisspeptin
The upstream gatekeeper that gates GnRH pulse generation.
Leuprolide
A GnRH agonist that suppresses the axis through continuous stimulation.
Luteinizing hormone · LH
Triggers ovulation and gonadal steroidogenesis.
Adiponectin
An adipokine that improves insulin sensitivity — and falls as fat rises.
Leptin
The adipocyte hormone that reports fat-store size and restrains appetite.
Calcitonin
The calcium-lowering counterpart to PTH.
Parathyroid hormone · PTH
The fast-acting hormone that raises blood calcium.
Parathyroid-hormone-related protein · PTHrP
A PTH-receptor ligand central to development — and to cancer hypercalcemia.
Atrial natriuretic peptide · ANP
Released when the atria stretch; promotes salt and water excretion.
B-type natriuretic peptide · BNP
A ventricular natriuretic peptide — and a routine heart-failure marker.
C-type natriuretic peptide · CNP
The vascular and bone-growth member of the natriuretic family.
Activin A
A TGF-β-family signal sharing myostatin's receptors, with broader roles.
Follistatin
The endogenous antagonist that neutralizes myostatin and activin.
Myostatin · GDF-8
The TGF-β-family brake that limits skeletal muscle mass.
BPC-157
A synthetic peptide with broad preclinical repair claims and little human data.
Epitalon
A synthetic tetrapeptide promoted for longevity; limited independent evidence.
GHK-Cu
An endogenous copper-binding tripeptide studied mainly in skin biology.
TB-500
A synthetic thymosin β4 fragment marketed for recovery; preclinical evidence.
Thymosin β4 · Tβ4
An endogenous actin-sequestering peptide involved in wound healing.
Humanin
A cytoprotective mitochondrial-derived peptide studied in stress and ageing.
MOTS-c
A mitochondrial-encoded peptide linked to metabolism and exercise biology.