Weight Reduction Observations A 2025 network meta-analysis published in the Journal of the Endocrine Society compared data from separate clinical trials: A systematic review examining multiple agents reported: Tirzepatide (15 mg): Up to 17.8% weight reduction from baseline Retatrutide (12 mg): Up to 24.2% weight reduction from baseline Semaglutide (2.4 mg): Up to 14% weight reduction for reference Phase 2 Trial Results: Retatrutide Published in the New England Journal of Medicine, the Phase 2 trial of retatrutide in adults with obesity showed dose-dependent reductions in body weight of up to 24% after 48 weeks of treatment
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If you are interested in retatrutide or other emerging weight management treatments, the most appropriate first step is to speak openly with your GP or a specialist in obesity medicine
Not every GLP-1 on the market qualifies, and even within covered medications, only certain forms are included
The forest plot from this meta-analysis is striking
And hopefully the World Health Organization and their declaration is one more united voice, a global voice to get these medications recognized, covered and more readily accessible to those who need them. In a statement to CBC News, P.E.I.'s Department of Health and Wellness said GLP-1 drugs are not covered for weight loss under the province's drug programs