Orlistat blocks some of the fat that you eat, keeping it from being absorbed by your body.
Orlistat is used to aid in weight loss, or to help reduce the risk of regaining weight already lost. This medicine must be used together with a reduced-calorie diet and increased physical activity. Orlistat is for use only in adults that are overweight or obese.
Xenical is the prescription-strength form of orlistat. The Alli brand is available without a prescription.
