One weight loss injection has been branded more effective than another, after scientists carry out the first ever head-to-head trial of Mounjaro and Wegovy.

The popular weight loss medications produced different results in patients who participated in a trial, and here’s what researchers found.

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.