Metabolic & Weight Loss · live pricing
Where to Buy Retatrutide — Cheapest Vendor in 2026
Live Retatrutide pricing across every research peptide vendor we track, ranked by price per mg. Updated daily. Right now the cheapest source is BioMyst Labs at $8.00/mg.
Retatrutide vendor ranking — cheapest first
Research profile
Mechanism, dosing, half-life, peer-reviewed studies for Retatrutide.
Coupon codes
Every active vendor coupon for Retatrutide, click-to-copy.
Reconstitution calculator
Vial size + BAC water → concentration, syringe units, doses per vial.
What is Retatrutide?
Retatrutide (also coded **LY3437943**) is an **investigational once-weekly triple-agonist** at the **GLP-1, GIP, and glucagon receptors** — the third-generation incretin-based therapy developed by Eli Lilly. Where [Semaglutide](/compound/semaglutide) activates GLP-1 alone and [Tirzepatide](/compound/tirzepatide) activates both GLP-1 and GIP, retatrutide adds glucagon receptor agonism for synergist… Read the full Retatrutide research profile
Buying Retatrutide — FAQ
Where can I buy Retatrutide online?
Retatrutide is available from 11 verified research peptide vendors tracked on BodyHackGuide. The cheapest current price per mg is BioMyst Labs at $8.00/mg. Tap any "Buy" button on this page to go directly to the vendor's product page.
What's the cheapest price for Retatrutide?
Right now the lowest price per mg comes from BioMyst Labs at $8.00/mg ($159.99 for 20mg). Daily price snapshots keep this ranking current — bookmark for the live cheapest source.
Is buying Retatrutide online safe?
Vendor safety varies. BodyHackGuide ranks every vendor on a 0-100 Trust Score (COA verification, payment transparency, community feedback, shipping practices). Vendors below the Trust Score threshold aren't surfaced on this page. The vendor profile linked from each listing shows their full score breakdown.
Do I need a prescription for Retatrutide?
Retatrutide is sold for research-use-only by the vendors on this page — no prescription required for research purchases. None of these vendors sell Retatrutide for human consumption, and BodyHackGuide doesn't promote off-label use. Always consult a licensed practitioner before any compound enters a clinical context.
Affiliate disclosure. BodyHackGuide may earn a commission from purchases made via the links on this page — at no additional cost to you. Vendor rankings are based purely on live price-per-mg data and the published Trust Score rubric. We don't accept payment for editorial placement. See our full affiliate disclosure .
Free 2026 Peptide Cheat Sheet — 50 pages, PDF
Reconstitution math, concentration charts, half-lives, and vendor trust tiers. The reference we wish we had on day one.