About iMuscle
iMuscle.cz is the Czech front of a pan-European iMuscle sports-nutrition + research-peptide brand (imuscle.de/.es/.ro/.it/.fr) reselling Umbrella Labs, ProHealth Longevity and other peptide lines (BPC-157, TB-500, Semaglutide, Retatrutide). It markets heavily on third-party testing but publishes no per-product COA – every certificate link resolves to one reused generic Umbrella Labs Melanotan II COA – and the brand carries a strongly negative multi-country reputation (imuscle.de 1.6/5, imuscle.es 1.8/5 with 79% 1-star).
Score overview
How we score →Weighted composite across 8 criteria; the letter grade follows our published bands and integrity gate.
Key facts
Pros
- Live real peptide shop with a large catalogue (BPC-157, TB-500, Semaglutide, Retatrutide, Cagrilintide, etc.), on-page CZK pricing, HTTPS, ~2.6-year domain, RUO labeling, and mainstream recourse-bearing card/Apple Pay/Google Pay payment via a tracked carrier (Zasilkovna) with fast advertised delivery
- The single COA on file (Umbrella Labs Melanotan II, lot ULP-27005, 99.80%) is itself a genuine MZ Biolabs document, so the underlying manufacturer does real independent testing even though iMuscle does not publish it per product
Cons
- COA theater: aggressive 'third-party tested / Certifikat analyzy' marketing but the only downloadable certificate is one generic Umbrella Labs Melanotan II COA reused across unrelated product pages (BPC-157, CJC-1295 DAC, Retatrutide) – no per-product or per-batch COA for the goods actually sold
- Brand-wide scam reputation across countries (imuscle.de 1.6/5, imuscle.es 1.8/5 with 79% 1-star, .ro/.it flagged by scam-checkers): recurring reports of non-delivery, no customer-service response, under-dosed/fake product with poor-English labels, and EUR-to-GBP currency overcharging; identity is a circular UK 'US Nutrition Ltd' with a self-disclaiming Czech branch and email-only contact
Is iMuscle legit? Common questions
Is iMuscle a legit peptide vendor?
We flagged iMuscle for fabricated or reused testing evidence, so it sits at the bottom of our scale (F, 31.1/100). We would avoid it.
Does iMuscle provide third-party lab testing?
No independent third-party COA was on file at our last review. Without external lab verification we cannot confirm what is in the vial, and the grade is capped.
Where does iMuscle ship to and how fast?
iMuscle reports shipping to Czech Republic / EU, typically in around ~next business day (Zasilkovna/Packeta, pickup or to-door, SMS tracking).
What payment methods does iMuscle accept?
iMuscle accepts card.
When was this iMuscle review last updated?
This grade was last reviewed on 2026-07-04 under methodology v1.0.
A live but scam-reputation pan-EU brand whose peptide third-party testing is a single reused Melanotan II COA passed off as per-product certification, with non-delivery, under-dosing and currency-overcharging complaints across its country domains. Fails on both the no-independent-COA cap and the reused/misrepresented-COA integrity flag – graded F.
Our labelled opinion, based on the dated evidence in the score overview. See how we score.
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