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Molecular Identity Developer Eli Lilly Mechanism Triple GLP-1, GIP, and glucagon receptor agonist FDA Status Under regulatory review (Phase 3 complete) Administration Weekly subcutaneous Triple-Agonist Mechanism Retatrutide combines all pathways: GLP-1: Core incretin signaling (shared with both Mazdutide and Tirzepatide) GIP: Second incretin pathway (shared with Tirzepatide, absent in Mazdutide) Glucagon: Hepatic energy expenditure (shared with Mazdutide, absent in Tirzepatide) For research examining the contributions of all three pathways, Retatrutide provides comprehensive coverage

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