Cheapest Retatrutide 40 mg

Per milligram, LN Peptides is cheapest right now at USD 0.425 per mg (RT40 Retatrutide 40mg * 10 vials, 10 × 40 mg = 400 mg, USD 170.00). The lowest total at checkout is Bio Pepz at USD 96.80 for 1 × 40 mg. Both come from 26 vendors with a current, in-stock 40 mg price.

Across 26 vendors, a 40 mg vial works out to $17.00 to $240.00 (median $96.80), counting kits by their price per vial. Shipping is extra at most vendors and is not included.

The cheapest kit here is USD 0.425 per mg (LN Peptides, 10 × 40 mg = 400 mg, USD 170.00 in total); the cheapest single vial is USD 2.42 per mg (Bio Pepz, USD 96.80). A kit is only cheaper if you will use every vial before it expires.

Vendors below a metascore of 70, vendors you can only order from by message, listings marked out of stock, prices older than 14 days, and prices far outside the range other vendors charge for the same peptide (usually a vial-count mistake or a whole kit priced as one vial).

Prices are read from each vendor's own website; the newest on this page was checked on 13 Nov 2026. The page is rebuilt with every price refresh, and a listing drops off once its price is more than 14 days old. Check the vendor's page before ordering.

No. The tables are sorted by price only. Some Buy links are affiliate links that may earn PeptideCompare a commission at no extra cost to you.