Key facts at a glance
| Retatrutide sizes | 5, 10, 20, 30 mg |
|---|---|
| Price | $34.99 (5 mg) · $69.95 (10 mg) · $129.99 (30 mg, $4.33/mg) |
| Third-party testing | Freedom Diagnostics, 99.83% (10 mg, Sep 2026) |
| Ships from | Not stated (Florida-registered LLC) |
| Shipping | $10 · free over $200 · 1–3 days |
| Payment methods | Card checkout, Zelle (10% off) |
| Guarantee / refunds | 30-day refund on unused products |
| Best for | Value buyers who want fresh per-size testing and a refund option |
Pros and cons
- Separate, recent COAs for each vial size, with endotoxin and microbial results
- Low price per milligram, falling to $4.33/mg at 30 mg
- Full refund within 30 days on returned unused products
- Trustpilot 4.8 from 42 reviews
- Product page calls it "GLP-3 RT" without naming retatrutide; only the blog describes it as a GLP-1/GIP/glucagon agonist
- No street address; the phone number appears only in the terms of service
- Shipping page still contains placeholder text instead of contact details
- Trustpilot notes the company has not recently invited reviews; all 42 are five-star
Bottom line
Rejuven8 combines low prices with thorough per-size testing, and its refund policy is more generous than most. Contact details are thin, and the store is about a year old.
Products and pricing
The product page calls it “GLP-3 RT” and describes it only as a GLP-family peptide. The store’s own research article describes GLP-3 RT as a 39-amino-acid triple agonist at the GLP-1, GIP and glucagon receptors. Sale prices: 5 mg $34.99, 10 mg $69.95, 20 mg $109.99 and 30 mg $129.99 ($4.33/mg). Bundles take 5–12% off, and paying by Zelle takes another 10% off.
Testing
Freedom Diagnostics certificates are posted for every size. The 10 mg sample (lot R8-P-1069, reported September 21, 2026) tested 99.83% with 10.47 mg net content. Identity was confirmed by LC-MS, and endotoxin (two replicates) and microbial PCR passed. The 5 mg and 30 mg vials were tested the same day at 99.33% and 99.87%. The 20 mg vial was tested on July 28, 2026, at 99.79%.
Shipping and payment
Orders ship within one business day by UPS or USPS and usually arrive in 1–3 business days. Our test checkout quoted $10 standard (2–4 days) or $15 expedited, and shipping is free over $200. The site does not say where orders ship from. Checkout offers card payment and Zelle; Zelle orders need an uploaded payment screenshot.
Policies and support
The returns page offers a 30-day refund: return the unused order and get 100% of the product price back. A return authorization is issued by email. Support is through support@rejuven8peptides.com and a contact form, and the stated average reply time is 2–4 hours on weekdays. The terms list phone +1 (561) 639-9739.
Reputation
The site is run by R8 Scientific LLC under Florida law, with disputes heard in Palm Beach County. No street address is given. The domain was registered on October 7, 2025. Trustpilot shows a 4.8 TrustScore from 42 reviews, all five-star. Several reviews describe personal use. We found no FDA warning letter or Eli Lilly lawsuit naming the company.
Alternatives to Rejuven8 Peptides
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.