Are Research Peptides Legal in the US? (2026 Update)
Are research peptides legal to buy in the US? How federal law, the FDA’s 503A list and 2026 changes apply to buyers, sellers and athletes.
Are research peptides legal to buy in the US? How federal law, the FDA’s 503A list and 2026 changes apply to buyers, sellers and athletes.
Learn how to read a peptide COA line by line, check it with the testing lab, and spot fake or edited reports. Includes a real-vs-fake checklist.
PEG-MGF is a pegylated mechano growth factor peptide from IGF-1. See why its key finding failed to replicate, what animal studies show, safety and WADA status.
Follistatin 344 blocks myostatin, the brake on muscle growth. See what the gene therapy trials found, why injected protein is untested, safety and WADA status.
Humanin is a mitochondrial-derived peptide that protects cells in lab and animal studies. See what’s known in people, the cancer caution and 2026 legal status.
VIP (vasoactive intestinal peptide) is a gut-lung signaling peptide tested as aviptadil. See COVID-19, sarcoidosis and lung trials, side effects and FDA Category 1 status.
LL-37 is the human antimicrobial peptide behind cathelicidin. See what wound and melanoma trials show, its psoriasis and rosacea links, safety and 2026 status.
Matrixyl (palmitoyl pentapeptide-4) is a collagen-signaling skincare peptide. See what topical trials show, Matrixyl 3000 differences, safety and legal status.
Melanotan II is a synthetic tanning peptide never approved as a drug. See its three small human studies, documented side effects, mole and melanoma reports and 2026 legal status.
Thymosin beta-4 is the 43-amino-acid repair protein behind TB-500. See what eye, wound and heart trials show, side effects, WADA status and 2026 legal status.