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#38 · Eight sizes
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Zenergy USA Review

Zenergy USA review: ZEN 3 RT (retatrutide per its Horizon Analytical COA) 5–60 mg from $75, Kovera Labs COAs with endotoxin and sterility (October 2026), free shipping over $300, cards and Apple Pay, no cash refunds.

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RetaRate score
★★★☆☆
Purity & third-party testing (25%)8.5
Pricing & value (15%)7.5
US shipping & fulfillment (15%)6.5
Customer support & policies (15%)3.5
Reputation & track record (15%)3.0
Transparency & checkout security (10%)5.5
Product range & extras (5%)7.0
Visit zenergyusa.com →

Key facts at a glance

Retatrutide sizes5, 10, 15, 20, 30, 40, 50, 60 mg
Price$15.00/mg (5 mg) to $3.32/mg (60 mg)
Third-party testingKovera Labs, 99.762% (30 mg, Oct 2026)
Ships fromNot stated
ShippingSame day before 12 pm ET · free over $300
Payment methodsCredit cards, Apple Pay
Guarantee / refundsAll sales final; replacement or store credit for verified errors
Best forBuyers who want a wide size range and frequent third-party testing, and accept final-sale terms

Pros and cons

Pros
  • Eight sizes, all in stock
  • COAs for every size from Kovera Labs, Horizon Analytical and Freedom Diagnostics; the newest is from October 2026
  • Endotoxin, sterility and heavy-metal results on the Kovera reports
  • Street address in Albany, GA published
Cons
  • Compound not named on the site; only a Horizon Analytical report identifies retatrutide
  • Product pages require an account to view
  • All sales final with no cash refunds; lost packages covered only by paid Route protection
  • No phone and no Trustpilot profile; domain registered March 2026

Bottom line

Zenergy USA tests its retatrutide more often than most stores and sells it in more sizes. It never names the compound on its own pages, it keeps all sales final, and it has no independent reviews yet.

Products and pricing

The product is sold as “ZEN 3 RT”. Its description lists only form, purity and storage, with no compound name, CAS number or mechanism. Prices: 5 mg $75, 10 mg $89, 15 mg $99, 20 mg $106, 30 mg $119, 40 mg $139, 50 mg $177 and 60 mg $199, all in stock. Product pages redirect to a login screen, so you must register a free account to view and order.

Testing

The test-results page lists more than a dozen ZEN-3 reports covering every size. The newest, from Kovera Labs, covers 30 mg batch U-260928-TRG-GRN: 99.762%, 32.28 mg, endotoxin pass, no growth on the sterility screen and heavy metals negative (certified October 6, 2026). It lists identity only as “ZEN-3”. A Horizon Analytical report for 30 mg lot DPS-9603520 (September 22, 2026) identifies the compound as retatrutide, CAS 2381089-83-2, at 99.52% with 29.88 mg measured. Freedom Diagnostics tested a 20 mg lot in July 2026 at 99.68%.

Shipping and payment

The home page says orders placed before 12 pm ET ship the same day, with free shipping over $300. The shipping policy says orders are processed within 1–2 business days and that rates are calculated at checkout. Optional paid Route protection covers loss, theft and damage in transit; without it, the company accepts no responsibility. US shipping only. Payment is by credit card or Apple Pay.

Policies and support

All sales are final, with no returns, exchanges or cash refunds. Shipping errors, missing items or compromised products must be reported within 48 hours with photos. If the company finds it was at fault, it may send a replacement or give store credit. Support is by email ([email protected]) and contact form, Monday–Friday 9 am–5 pm ET; no phone number was listed. The address is 2800 Old Dawson Rd, Suite 2 #103, Albany, GA 31707.

Reputation

The domain was registered March 3, 2026. There is no Trustpilot profile. We found no FDA warning letter or Eli Lilly lawsuit naming the company.

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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.