Key facts at a glance
| Retatrutide sizes | 10, 30, 40 mg (plus 10-vial packs) |
|---|---|
| Price | $99 (10 mg) · $195 (30 mg) · $220 (40 mg) |
| Third-party testing | Horizon Analytical, 99.35% (Jul 2026) |
| Ships from | Orlando, FL |
| Shipping | Rate at checkout · 3–5 days standard |
| Payment methods | Not found |
| Guarantee / refunds | Shipped orders generally not refundable |
| Best for | Buyers who want large vials at a low price per mg and accept limited recourse |
Pros and cons
- Product is named retatrutide; the COA gives the CAS number
- Low price per mg on 40 mg vials ($5.50/mg)
- Street address in Orlando, FL
- One COA (a 30 mg sample) is linked from every size
- Shipped orders are generally not refundable; no written reship policy
- No phone; shipping cost and payment methods not shown before checkout
Bottom line
Primal Science Peptides names retatrutide plainly and is cheap on large vials. Its documentation and buyer protection are thin, though: one COA covers every size, and shipped orders generally cannot be refunded.
Products and pricing
All three sizes were in stock:
- 10 mg: $99 ($9.90/mg)
- 30 mg: $195 ($6.50/mg)
- 40 mg: $220 ($5.50/mg)
Ten-vial “bulk offers” are also listed. A 30% code was advertised sitewide.
Testing
All three product pages link the same Horizon Analytical certificate: lot PSP-8040260-P, a 30 mg sample analysed July 5, 2026 by UPLC/MS. It identifies retatrutide (CAS 2381089-83-2) at 99.35% purity with 29.65 mg measured. There is no endotoxin or sterility result, and there is no separate COA for the 10 or 40 mg vials.
Shipping and payment
Orders ship from Orlando, FL to US addresses only. Processing takes 1–2 business days, and the about page claims same-day dispatch for qualifying weekday orders before 2 pm. Standard delivery is 3–5 business days, with expedited and overnight options. Carriers and shipping rates are not stated before checkout. Payment methods were not listed on the site.
Policies and support
“Shipped orders are generally not refundable except where required by law or where a shipping or fulfillment error applies.” Cancellations before shipment may get a full refund. The policies do not set out a reship or refund process for lost or damaged packages; the shipping policy only says to contact support. Support is by email (support@primalsciencepeptides.com) and contact form, with a 24-hour response target. No phone number is listed. Address: 16877 E Colonial Dr, Orlando, FL 32820.
Reputation
Trustpilot shows 4.4 from 11 reviews, all five-star. The company has not invited reviews recently. The domain was registered in January 2026. We found no FDA warning letter or Eli Lilly lawsuit naming the company.
Alternatives to Primal Science 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.