Key facts at a glance
| Retatrutide sizes | 5, 10, 15, 20, 30, 60 mg |
|---|---|
| Price | $17.98/mg (5 mg) to $9.83/mg (60 mg) |
| Third-party testing | Chromate, 99.570% (10 mg lot, May 2026) |
| Ships from | USA (warehouse location not stated) |
| Shipping | $14.90 · free over $200 · 2–5 days · 12 pm ET cutoff |
| Payment methods | Not listed |
| Guarantee / refunds | 60-day money-back on unopened items; reship or refund for lost packages |
| Best for | Buyers who value a long return window and lab-verifiable COAs over price |
Pros and cons
- Chromate COA with batch number, sterility, endotoxin and heavy metals, verifiable by access code
- 60-day money-back window on unopened items
- Lost, damaged or badly delayed orders are reshipped or refunded
- Domain registered July 2024; large catalog
- Expensive: $159.90 for 10 mg, even at 'sale' prices
- TrustScore 3.7 with 25% one-star reviews, including a contamination allegation
- Two different business addresses (Wyoming and Florida), no phone and no legal entity name
- Product text says the COA is 'available upon request', which conflicts with the posted COAs
Bottom line
Evolve Peptides has strong lab documentation and buyer-friendly returns, but it charges among the highest prices we have seen, and its review profile includes serious unresolved complaints.
Products and pricing
“GLP-3 RT”, with CAS 2381089-83-2 and the synonym LY3437943 on the page. Sale prices: 5 mg $89.90, 10 mg $159.90, 15 mg $189.90, 20 mg $219.90, 30 mg $299.90, 60 mg $589.90, each shown against a higher “original” price. A 12 mg listing ($172.90) had no add-to-cart button. Wholesale discounts start at 15 vials. Two older product URLs (reta-5mg, reta-30mg) returned a site error.
Testing
The 10 mg page gives the current lot as 1924414129 at 99.570%. The matching Chromate COA (#34573, analyzed May 2, 2026) shows identity as retatrutide, 10.18 mg measured, sterility pass, endotoxin under 1.5 EU/vial and metals under 50 ppb, with an access code for verification on Chromate’s site. An MZ Biolabs report for 5 mg lot 3468012957 shows 99.97% (December 29, 2025). A COA lookup page searches by the batch number on the label.
Shipping and payment
Orders before 12 pm ET usually ship the same day, mostly by USPS. Standard (2–5 business days) costs $14.90, free over $200; two-day is $25.90 and overnight $52.90. Lost, damaged or significantly delayed orders are reshipped or refunded. The site says its peptides are lyophilized in Texas. Payment methods are not listed; the billing descriptor is “EVOLVE”.
Policies and support
60-day money-back guarantee on unopened items, counted from confirmed delivery; the guarantee page also allows up to two opened items per customer. Returns need an RMA, refunds go to the original payment method, and the buyer pays return shipping. The product page also promises a 200% refund if purity does not match the label. The vendor voids its guarantees if a customer indicates human use. Support is by email and chat, 7 days a week; no phone number is listed. Two addresses appear: 5830 E 2nd St, Casper, WY 82609 (contact page) and 1691 Forum Place, Suite B, West Palm Beach, FL 33401 (shipping policy).
Reputation
Domain registered July 9, 2024. Trustpilot shows 3.7 from 39 reviews (61% five-star, 25% one-star). Complaints include a reviewer who says independent testing found “foreign toxins” (the company asked for the results and order details and said it found no matching record), a reported bad batch of retatrutide, and delivery problems. The company replied to 36% of negative reviews. We found no FDA warning letter or Eli Lilly lawsuit naming the company.
Alternatives to Evolve Peptides
Every vendor is assessed against the same criteria, explained on How We Rate. Vendors change prices and policies often — confirm details on the vendor's site before ordering. Retatrutide is an investigational compound and is not FDA-approved; see our medical disclaimer.