The peptide
family tree

The incretin-agonist lineage. Members extend half-life, add receptor targets, or alter the metabolic signal.

• Exendin-4

  Endogenous source molecule associated with the GLP-1 lineage.

• SemaglutideS

  GLP-1 receptor agonist.

• TirzepatideS

  Dual GLP-1 / GIP agonist.

• DulaglutideA

  Weekly GLP-1 agonist.

• LiraglutideA

  Daily GLP-1 agonist.

• RetatrutideA

  Triple GLP-1 / GIP / GCG agonist.

• ExenatideB

  First GLP-1 agonist.

• LixisenatideC

  Short-acting GLP-1 agonist.

Analogs of growth hormone–releasing hormone designed to raise endogenous GH pulses.

• GHRH

  Endogenous 44-amino-acid hypothalamic hormone.

• SermorelinA

  First 29 amino acids of GHRH.

• TesamorelinA

  GHRH analog.

• CJC-1295 no DACB

  Modified GRF(1-29).

• CJC-1295 with DACB

  CJC-1295 variant with DAC to extend half-life.

GH-secretagogue lineage working through the ghrelin receptor rather than the GHRH receptor.

• GhrelinA

  Endogenous GH-release hormone.

• HexarelinB

  Potent ghrelin-receptor secretagogue.

• MK-677B

  Oral non-peptide mimetic associated with the ghrelin-receptor branch.

• GHRP-2C

  Potent GH-releasing peptide.

• GHRP-6C

  First-generation GH-releasing peptide.

• IpamorelinC

  Selective ghrelin-receptor GH secretagogue.

Analogs of α-MSH, the endogenous melanocortin involved in pigmentation and appetite signaling.

• α-MSHA

  Endogenous melanocortin hormone.

• BremelanotideA

  Melanocortin analog.

• AfamelanotideB

  Melanocortin analog.

• Melanotan-IID

  Research-only melanocortin analog.

Peptides isolated from thymic tissue; the α-family is associated with immune research and the β-family with actin-based tissue-repair research.

• Thymosin α-1B

  Thymosin alpha-family peptide.

• Thymosin β-4C

  Thymosin beta-family peptide associated with tissue-repair research.

  In catalog →

Fragments of body-protection compound, a stable gastric pentadecapeptide first isolated in 1993.

• BPC-157C

  Stable gastric pentadecapeptide.

  In catalog →

• Pentadeca ArginateD

  Arginate salt form developed for improved stability.

Topical short peptides that migrated from wound-healing research into cosmeceuticals.

• ArgirelineB

  Topical cosmetic peptide.

• GHK-CuB

  Copper-bound peptide associated with skin and hair research.

  In catalog →

• MatrixylC

  Cosmetic peptide associated with collagen-signaling research.

• AHK-CuD

  Copper-tripeptide variant.

Short organ-targeted peptides developed by Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology.

• ThymalinC

  Khavinson bioregulator associated with thymus research.

• BronchogenD

  Khavinson bioregulator associated with bronchial tissue.

• CardiogenD

  Khavinson bioregulator associated with cardiac tissue.

• CartalaxD

  Khavinson bioregulator associated with cartilage.

• ChonlutenD

  Khavinson bioregulator associated with respiratory mucosa.

• CortagenD

  Khavinson bioregulator associated with cortex.

• EpitalonD

  Khavinson bioregulator associated with pineal / longevity research.

• LivagenD

  Khavinson bioregulator associated with liver.

• N-Acetyl Epitalon AmidateD

  Stabilized Epitalon variant.

• PancragenD

  Khavinson bioregulator associated with pancreas.

• PinealonD

  Khavinson bioregulator associated with pineal / neuropeptide research.

• ProstamaxD

  Khavinson bioregulator associated with prostate.

• TestagenD

  Khavinson bioregulator associated with testicular tissue.

• ThymagenD

  Thymus-associated variant.

• VesugenD

  Khavinson bioregulator associated with vascular tissue.

• VilonD

  Khavinson bioregulator associated with immune research.

• OvagenF

  Khavinson bioregulator associated with hepatic / ovarian tissue.

Short Russian-origin neuropeptides designed for intranasal delivery.

• N-Acetyl Selank AmidateC

  Stabilized Selank variant.

• SelankC

  Tuftsin-derived neuropeptide.

• SemaxC

  ACTH(4-10) analog.

• N-Acetyl Semax AmidateF

  Further-stabilized Semax variant.

Decapeptide analogs of gonadotropin-releasing hormone.

• GnRHB

  Endogenous decapeptide.

• GonadorelinA

  GnRH analog.

• HistrelinB

  Long-acting GnRH agonist.

• LeuprolideB

  GnRH agonist.

• NafarelinB

  Intranasal GnRH agonist.

• TriptorelinB

  GnRH agonist.

• BuserelinC

  GnRH agonist.

Notable peptides that do not share a clean lineage with the families above.

• OxytocinA

  Standalone hormone peptide.

• DesmopressinB

  Vasopressin analog.

• SS-31B

  Cardiolipin stabilizer.

• IGF-1 LR3C

  Long-acting IGF-1 analog.

• DSIPD

  Delta sleep-inducing peptide.

• IGF-1 DESD

  Truncated IGF-1 form.

• LL-37D

  Cathelicidin antimicrobial peptide.

• MOTS-cD

  Mitochondrial-derived peptide.