Key facts at a glance
| Retatrutide sizes | 10, 30 mg |
|---|---|
| Price | $99.99 (10 mg) · $169.99 (30 mg); 6-pack $152.99/vial |
| Third-party testing | HPLC 99.13–99.99%; lab name redacted |
| Ships from | Texas (pages say both San Antonio and Dallas) |
| Shipping | UPS/USPS · free over $100 (policy) or $300 (product page) |
| Payment methods | PayPal (incl. cards via PayPal) |
| Guarantee / refunds | Replacement or refund for wrong, damaged, missing, lost or defective orders within 7 days |
| Best for | Buyers comfortable trusting in-house COA summaries in exchange for multi-pack pricing |
Pros and cons
- Product page describes a GIP/GLP-1/glucagon triple agonist and cites the original research
- 3-pack, 6-pack and subscription discounts
- Written replacement or refund for lost, damaged, wrong or defective orders
- Compound sold as 'RT3' and listed at 5419 Da, which does not match retatrutide
- COA pages redact the lab and manufacturer; current lots share one batch code across products
- Contradictory ship-from city and free-shipping threshold; email on a different domain
- Domain registered May 2026; no phone, no Trustpilot profile
Bottom line
Merit Sciences has a polished site and fair buyer-protection terms. Its testing cannot be checked, though, because every certificate hides the lab’s name.
Products and pricing
“RT3” is described as a “triple agonist at GIP, GLP-1, and glucagon receptors” and cites the Coskun 2022 retatrutide paper. The page does not name the compound. It lists a molecular weight of 5419 Da, which does not match retatrutide. Prices: 10 mg $99.99, 30 mg $169.99 ($5.67/mg). The 30 mg vial costs $161.49 each in a 3-pack and $152.99 each in a 6-pack, and a subscription saves 10%. The site also runs a Practitioner Program for licensed healthcare professionals.
Testing
The COA library lists RT3 lots at 10, 20, 30 and 60 mg, with HPLC purity from 99.083% to 99.989%. The current 10 mg lot shows 99.13% and the current 30 mg lot 99.27%, both tested July 30, 2026. Each certificate page states that “manufacturer and laboratory identifiers are redacted”, and the RT3 entries have no downloadable PDF. Every product’s current lot shares the same batch reference, LOT2026-06-0001. One older listed lot was tested in March 2025, before the domain existed.
Shipping and payment
Orders ship via USPS or UPS with tracking. The site says processing takes 1–2 business days, or that orders dispatch within 48 hours. The shipping policy says orders ship from Dallas, TX, and free standard shipping starts at $100. Product pages say San Antonio and $300. Expedited shipping costs extra. US only, no P.O. boxes. Payment goes through PayPal, including cards processed by PayPal.
Policies and support
Wrong, damaged, missing, lost or defective orders reported within 7 days of delivery get a replacement or refund at no extra cost. Opened vials and requests after 7 days are excluded. Product pages also promise a full refund plus replacement if a batch fails the ≥99% HPLC standard. Support is email only, through rx@meritsciences.com and info@meritpeptides.com (a different domain), with replies within one business day. The site names Merit Sciences LLC, Dallas, TX, but gives no street address or phone.
Reputation
The domain was registered May 6, 2026. No Trustpilot profile exists. We found no FDA warning letter or Eli Lilly lawsuit naming the company.
Alternatives to Merit Sciences
Scores use the weighted 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.