In the Phase 2 clinical trial (NEJM, 2023), retatrutide was administered subcutaneously at doses ranging from approximately 0.5 mg to 12 mg per week, with dose escalation under close medical supervision
While 80C conditions are not always required, they offer an additional layer of protection that many research groups prefer when working with expensive or difficult-to-source materials
It requires understanding what separates genuine research-grade retatrutide from the questionable material flooding the market
Semaglutide Phase 3 trials showed approximately 15 to 17% weight loss, while retatrutide Phase 2 data showed up to 24.2%
In consistency, AMPK activation induced by GLP-1 impaired inflammatory signals in keratinocytes and restrained macrophage migration (73)
Retatrutide also remains investigational, with ClinicalTrials.gov listing active or recently updated Phase 3 research records as of May 2026