GLP-1 class · 2 vendors stocking
LY3437943, GLP-3, triple agonist
Every point is published and checkable — how the value score is built ›
| Vendor | Listing | Size | Vial price | Per milligram, after code | Value | |
|---|---|---|---|---|---|---|
| ZestyRat Best buy | LY3437943 | 30mg | $249.99 | $7.50 |
8.4 | View › |
| Dynamic Lowest price | RETA GLP-3R | 30mg | $199.99 | $6.67 | 7.7 | View › |
Every row read from the vendor's live storefront on August 26, 2026. Ordered by value score, not by sticker price. Vials only — capsules, sprays and serums are excluded. Method ›
Retatrutide is a single-molecule triple agonist at the GLP-1, GIP and glucagon receptors — the third generation of incretin chemistry after semaglutide (single) and tirzepatide (dual). It is the newest of the three and the most expensive per milligram across every catalog we track, which is what you would expect from a compound still in clinical development rather than off-patent supply.
Deeper background, sourcing and quality notes live on our sister site: Peptides Uncaged ›
Always-on partner code, re-tested at a live checkout. It stacks on the prices above, so a ZestyRat row within 10% of the leader is usually the cheaper order. Every other working code is on the Deal Board.
Questions
The cheapest Retatrutide vial across the four storefronts we index is Dynamic Peptides at $199.99 for the 30mg vial — $6.67 per milligram Prices were read from the vendors' live catalogues on August 26, 2026.
Dynamic Peptides, at $6.67 per milligram. That is 20% below the next-cheapest vendor on the board. WHO/GMP and ISO 9001 US facilities with a published COA on every product page.
Across the vendors we index: 10mg, 20mg, 30mg. Larger vials are almost always cheaper per milligram, which is why the table above is sorted on that column rather than on sticker price.
Vendors label this one inconsistently. ZestyRat and Pinnacle list it as "GLP-3", Dynamic lists it as "Reta". They are the same compound. Buy on total milligrams, not on the marketing name — the 30mg vial is materially cheaper per milligram than the 10mg at every vendor here.
No. Retatrutide is sold by every vendor listed here for laboratory research use only. Nothing on this page is medical advice or a recommendation to use any compound.
Also in GLP-1 class
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