For instance, in February 2024, The Lancet published a study showing that semaglutide achieved 15.8% average weight loss, confirming its superior real-world efficacy over other GLP-1 drugs
Another possibility is the existence of differences in the effect of high molecular weight versus low molecular weight peptides on GLP-1R signaling in the CNS [23]
Research suggests regaining weight is common after cessation
Starting July 1, 2026, eligible Medicare Part D enrollees can access Wegovy (semaglutide), Zepbound (tirzepatide, KwikPen formulation only), and Foundayo (orforglipron, an oral GLP-1 option) for a $50 monthly copay
Retatrutide is recognised for its multi-pathway mechanism, supporting appetite regulation, metabolic efficiency, and fat utilisation