Both Wegovy and Mounjaro are given as weekly injections via pre-filled pens that can be self-administered into the upper arm, thigh or stomach. They work as an appetite suppressant by mimicking a hormone called glucagon-like peptide-1 (GLP-1).

A weight-loss drug more effective than Ozempic and Wegovy has recently been approved in Australia. The drug, tirzepatide, is sold under the brand name Mounjaro and affects feelings of hunger and fullness,

The British government announced a multimillion dollar pharmaceutical partnership with Eli Lilly, including a trial that will study the impact of a weight-loss drug on work and productivity.