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.

A new study shows that people Zepbound lost about 50% more weight than those using Wegovy. It was the first head-to-head trial of the blockbuster weight-loss medications.