The other.

Leuprolide (leuprorelin) is a synthetic GnRH agonist nonapeptide approved by the FDA under the brand name Lupron for advanced prostate cancer, endometriosis, uterine fibroids, and central precocious puberty.

Nafarelin is a synthetic GnRH agonist decapeptide administered as a nasal spray, approved by the FDA under the brand name Synarel.

Neuropeptide Y (NPY) is a 36-amino acid neuropeptide and one of the most abundant neuropeptides in the mammalian central nervous system.

Octreotide is a synthetic octapeptide analogue of the natural hormone somatostatin, FDA-approved for the treatment of acromegaly, carcinoid tumor-related diarrhea, and vasoactive intestinal peptide-secreting tumors (VIPomas).

Orforglipron (LY3502970, brand name Foundayo) is Lilly's oral GLP-1 pill: a once-daily, small-molecule, non-peptide GLP-1 receptor agonist.

Polymyxin B is a cyclic lipopeptide antibiotic produced by Paenibacillus polymyxa, used as a last-resort treatment for multidrug-resistant gram-negative infections.

Retatrutide (LY3437943) is Eli Lilly's investigational triple hormone receptor agonist targeting GLP-1, GIP, and glucagon receptors simultaneously.

Romidepsin (Istodax) is an FDA-approved bicyclic depsipeptide histone deacetylase (HDAC) inhibitor indicated for cutaneous T-cell lymphoma (CTCL) in adults who have received at least one prior systemic therapy.

Secretin is a 27-amino acid gastrointestinal hormone produced by S-cells of the duodenum in response to acidic chyme.

Somatostatin is an endogenous cyclic peptide existing in 14-amino acid (SST-14) and 28-amino acid (SST-28) isoforms.

Substance P is an 11-amino acid neuropeptide belonging to the tachykinin family, with the sequence Arg-Pro-Lys-Pro-Gln-Gln-Phe-Phe-Gly-Leu-Met-NH2.

Teriparatide is a recombinant form of the first 34 amino acids of human parathyroid hormone (PTH 1-34) and the first anabolic osteoporosis treatment approved by the FDA.

Vasopressin (Vasostrict) is an FDA-approved synthetic form of the endogenous nonapeptide antidiuretic hormone (ADH) produced by the hypothalamus.

Vasoactive Intestinal Peptide (VIP) is a 28-amino acid endogenous neuropeptide found throughout the central and peripheral nervous systems and gut.

Angiotensin II is an endogenous octapeptide and the primary effector of the renin-angiotensin-aldosterone system (RAAS).

Nesiritide (Natrecor) is an FDA-approved recombinant human B-type natriuretic peptide (BNP-32) structurally identical to the endogenous cardiac hormone.

Bradykinin is an endogenous nonapeptide generated from kininogens by the enzyme kallikrein.

Cagrilintide is a long-acting synthetic amylin analog developed by Novo Nordisk, designed for once-weekly subcutaneous dosing.

Collagen dipeptides, principally Pro-Hyp (Prolyl-Hydroxyproline) and Hyp-Gly (Hydroxyproline-Glycine), are the primary bioavailable fragments generated during digestion of hydrolyzed collagen supplements.

Cortistatin is a neuropeptide belonging to the somatostatin family, existing in three biologically active isoforms: CST-14, CST-17, and CST-29.