The obesity drug helped people trim about two inches more off their waists than Wegovy in the first head-to-head study of the rival medicines.

A new study has found that people taking Eli Lilly's obesity drug Zepbound lost almost 50% more weight than those using Novo Nordisk's Wegovy.

Eli Lilly said on Sunday its drug Zepbound was superior to Novo Nordisk's Wegovy across five weight-loss targets such as reducing waist circumference, citing data from a head-to-head trial.