Peptide Directory

Semaglutide is a GLP-1 receptor agonist with 94% sequence homology to human glucagon-like peptide-1. Used for weight management (Wegovy) and type 2 diabetes (Ozempic). Demonstrates significant effects on appetite regulation and glucose control.

Tirzepatide is a dual GIP/GLP-1 receptor agonist for weight management and type 2 diabetes. Marketed as Mounjaro (diabetes) and Zepbound (weight management). Outperforms semaglutide in head-to-head trials for both glucose control and weight loss.

Oxytocin is a naturally occurring nonapeptide hormone produced in the hypothalamus. Known as the 'love hormone' for its role in social bonding. FDA-approved for labor induction; researched for autism, anxiety, and social disorders.

PT-141 (Bremelanotide) is a melanocortin receptor agonist studied for sexual dysfunction. Works centrally in the brain rather than peripherally like PDE-5 inhibitors. Marketed as Vyleesi for premenopausal women with HSDD.

Tesamorelin is a synthetic growth hormone-releasing hormone (GHRH) analog used for reducing visceral adipose tissue in patients with lipodystrophy. Marketed as Egrifta. Specifically targets deep abdominal fat accumulation.

Liraglutide is a GLP-1 receptor agonist with 97% sequence homology to native GLP-1. FDA-approved as Victoza (diabetes) and Saxenda (weight management). Established efficacy and safety profile with extensive clinical data.

Melanotan 1, also known as Afamelanotide, is a synthetic analog of alpha-melanocyte stimulating hormone (α-MSH) that selectively activates MC1R. Commonly administered via subcutaneous injection or nasal spray for tanning. FDA-approved as Scenesse (16 mg subcutaneous implant) for erythropoietic protoporphyria (EPP).

Cosyntropin is a synthetic analog of the first 24 amino acids of adrenocorticotropic hormone (ACTH 1-24). It is FDA-approved as a diagnostic agent for adrenal insufficiency testing (Cortrosyn). Also used therapeutically in certain conditions such as infantile spasms.