Side-by-side compound comparison Receptor targets Tirzepatide GLP-1 + GIP (dual) Semaglutide GLP-1 only Retatrutide GLP-1 + GIP + Glucagon (triple) Half-life Tirzepatide ~5 days Semaglutide ~7 days Retatrutide ~6 days Dosing frequency Tirzepatide Once weekly Semaglutide Once weekly Retatrutide Once weekly Max studied dose Tirzepatide 15 mg / week Semaglutide 2.4 mg / week (Wegovy) Retatrutide 12 mg / week Peak weight loss Tirzepatide 22.5% (SURMOUNT-1, 72 wk) Semaglutide 15.8% (STEP-1, 68 wk) Retatrutide 24.2% (Phase 2, 48 wk) FDA status (June 2026) Tirzepatide Approved (T2D, obesity, OSA) Semaglutide Approved (T2D, obesity, CV risk) Retatrutide Investigational Phase 3 Head-to-head Tirzepatide 20.2% vs semaglutide 13.7% (SURMOUNT-5) Semaglutide Retatrutide Not yet head-to-head vs tirzepatide HFpEF benefit Tirzepatide Yes (SUMMIT, HR 0.62) Semaglutide Yes (STEP-HFpEF) Retatrutide Not yet studied Unique advantage Tirzepatide Best-in-class FDA-approved efficacy
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However, safety continues to be a concern as there have been reports of adverse reactions, which range from mild, transient headaches and skin eruptions to severe drug reactions requiring hospitalization
In addition, the fungi can adapt to the low oxygen levels and continue to grow and spread
For many adults, daily supplementation is safe and effective for maintaining consistent antioxidant levels
Its associated with double the risk of early death
