Compare · all pairs
A
Retatrutide
B
Tirzepatide
A side-by-side look at what Retatrutide and Tirzepatide actually are, so you can see where they overlap and where they genuinely differ before deciding which is worth researching further — no score, no “winner,” just the facts next to each other.
FDA status
Retatrutide
Not FDA-approved — investigational only, zero results in FDA's own Drugs@FDA database; Eli Lilly has said it plans to file a Biologics License Application in Q1 2027
Tirzepatide
FDA-approved — Zepbound & Mounjaro (the compounded version this board ranks is not independently FDA-reviewed)
Typical dose / use
Retatrutide
No FDA-approved dose exists. Its own Phase 2/3 trials tested weekly maintenance doses from 1–12 mg, reached via a multi-week titration schedule under direct clinical supervision
Tirzepatide
2.5–15 mg/week (FDA label range)
Product forms
Retatrutide
Injectable — but not legally sold for human use in the U.S. in any form today
Tirzepatide
Injectable
How it works
Retatrutide
A triple agonist — activates the GIP, GLP-1, and glucagon receptors at once; the added glucagon-receptor activity versus tirzepatide's two-receptor mechanism is believed to increase energy expenditure on top of appetite suppression.
Tirzepatide
Activates two hormone receptors at once — GIP and GLP-1 — slowing gastric emptying, increasing insulin release when blood sugar is high, and reducing appetite.
Providers ranked on this board
Retatrutide
Not a board molecule — Retatrutide isn't sold as a compounded product by any provider on this site's ranked boards.
Tirzepatide
118
Cost on this board
Retatrutide
Not a board molecule — Retatrutide isn't sold as a compounded product by any provider on this site's ranked boards.
Tirzepatide
From $79/mo
Every fact above is reused from Retatrutide's own research article and Tirzepatide's own compound guide, not re-derived here. A highlighted value means that number is objectively larger or smaller — more providers ranked, a lower standing price — never a claim about which compound is “better.” Cost and provider counts are read live from each compound's own board and can change without notice.
Go deeper on each compound
Retatrutide
Medical disclaimer: This content is for general educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional before starting, stopping, or changing any treatment.
This page is a fact comparison, not a recommendation for either compound — talk to a licensed clinician about your own situation.