Mounjaro contains the active ingredient tirzepatide. Tirzepatide is from a class of drugs called GLP-1 agonsts. This is a class of drug which helps regulate hunger and is released by the intestines after a meal.Due to being similar to GLP-1, Mounjaro regulates appetite causing you to feel fuller and less hungry. This can lead to eating fewer calories and losing weight. Focussing on eating a reduced-calorie diet will further enhance the benefits of Mounjaro.