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Eli Lilly's retatrutide caused 71-pound average weight loss and reduced knee pain in obese adults with osteoarthritis.
Eli Lilly’s experimental drug retatrutide, a triple hormone agonist targeting GLP-1, GIP, and glucagon, led to an average weight loss of 28.7%—about 71 pounds—over 68 weeks in a Phase 3 trial involving adults with obesity and knee osteoarthritis.
The drug also reduced knee pain by up to 75.8% and improved cardiovascular risk markers, with 12% to 14% of patients achieving complete pain relief.
Side effects like nausea and diarrhea caused 18% of patients on the highest dose to discontinue treatment, and some cited excessive weight loss as a reason.
The results, which outperformed existing weight-loss drugs, support potential approval for obesity and osteoarthritis treatment, with seven additional Phase 3 results expected in 2026.
La retatrutida de Eli Lilly causó una pérdida de peso promedio de 71 libras y redujo el dolor de rodilla en adultos obesos con osteoartritis.