Buyers report jitai delivering in under a week, while the vendor itself warns that scammers clone its name, website, and 2025 test report to take orders they never fill.

A China-based peptide vendor (aka Keruisi) claiming a US presence in Massachusetts, reached via WhatsApp.

Where it trips our checks

• Contact transparency: orders run through a WhatsApp handle ("Crystal") under two names, jitai and Keruisi, plus an unverified US address claim. Rotating names with no verifiable address is worth checking before paying.
• Domain / pressure pattern: impostors reuse jitai's name, site, and test report, so the contact you reach may not be the real vendor.
• Promotional signal: the "sales manager" posted a self-serving warning on Reddit from an account since banned.

Sources

• The reader who flagged jitai said it shipped to the Philippines and Australia.
• A glp1forum buyer reported a reliable six-day delivery.
• The seller's own Reddit warning about impersonators (account now banned).

Bottom line: No verified scam pattern in the sources reviewed and first-hand reports are positive, so this reads as likely not a scam with limited evidence.

— maxg Founder of Ouros Lab. I write the seller research notes here.