Education hub
Most popular peptides rest on animal data. We grade each one honestly and note where it stands with regulators.
A gastric-derived peptide studied for tendon, ligament and gut healing — almost entirely in animals.
Regulatory status
Not FDA-approved. FDA placed it on the list of substances not eligible for compounding (Category 2). Prohibited by WADA.A synthetic fragment of thymosin beta-4, studied for wound healing and cell migration in preclinical models.
Regulatory status
Not approved for human use. Prohibited by WADA. Sold as 'research use only'.A copper peptide used topically in skincare and scalp products; small studies support collagen and skin quality effects.
Regulatory status
Widely available in cosmetic topicals. Injectable forms are not FDA-approved.A GHRH analog paired with a GH secretagogue to raise growth hormone and IGF-1 pulses.
Regulatory status
Not FDA-approved. Restricted for compounding. Prohibited by WADA.A GHRH analog once FDA-approved for pediatric GH deficiency; raises endogenous GH release.
Regulatory status
Branded product discontinued in the US; available via some compounding pharmacies with a prescription.A synthetic tetrapeptide from Russian research claimed to affect telomerase; evidence is limited and largely unreplicated.
Regulatory status
Not approved in the US. Research use only.A mitochondria-derived peptide that improved insulin sensitivity and exercise capacity in mice.
Regulatory status
Not approved. Prohibited by WADA.Bremelanotide; FDA-approved (Vyleesi) for low sexual desire in premenopausal women.
Regulatory status
FDA-approved prescription drug for a specific indication; other uses are off-label.Not medical advice — talk to a licensed clinician. Many peptides are sold "for research use only" and are not approved for human use. Quality and purity vary widely.