Compare 2 or 3 peptides head-to-head: FDA status, primary indication, typical dose, evidence level, monthly cost, side effects, and the deep-dive article on each one.
How to read this comparison
- Status: FDA-approved means a US prescription drug. Compounded means legal only via 503A pharmacy. Grey-market means sold online without FDA approval — quality and safety are not assured.
- Evidence level: “RCT” = randomized controlled trial in humans (gold standard). “Observational” = post-hoc data from clinical use. “Animal only” = no human trials yet. Use this when comparing FDA-approved vs grey-market.
- Cost: typical monthly retail in the US, list price unless noted. Insurance and savings cards can change this dramatically — see our cost calculator for personalized estimates.