What is orlistat?
Orlistat is a medicine which can help you to lose weight if you have overweight or obesity. Orlistat works by blocking chemicals (enzymes) in your gut which digest fat. Orlistat stops about about a third of the fat that you eat from being digested. The undigested fat is not absorbed into your body and is passed out with your stools (faeces).
How does orlistat work?
Orlistat works by interfering with the way fat is digested and absorbed into the body.