Mounjaro helps you lose up to 22.5%* of your starting weight with an anti-obesity active ingredient called Tirzepatide. This ingredient activates the GLP-1 and GIP receptors in your brain, helping to control your blood sugar levels, reduce your appetite and make you feel fuller for longer after meals. Because of its dual action on both receptors – not just GLP-1 – Mounjaro is considered one of the most effective injections for weight loss, with results seen within weeks of starting treatment.