Eli Lilly and Company (LLY) announced that its popular obesity drug, Zepbound (tirzepatide) demonstrated more weight loss than rival Novo Nordisk’s (NVO) Wegovy in a first-ever head-to-head obesity study, SURMOUNT-5. Zepbound is a dual GIP and GLP-1 receptor agonist, while Wegovy is a mono GLP-1 receptor agonist.In the phase IIIb 72-week study, Zepbound led to an average weight loss of 20.2% of body weight in adults with obesity or overweight, compared to 13.7% for Wegovy, which represents a 47% greater rel ...