Alli Weight Loss Reviews: Alli is a 60-milligram over-the-counter variant of the prescription drug orlistat (Xenical). Both Alli and Xenical are intended to be used in combination with a low-calorie, low-fat diet and daily physical activity to help you lose weight. Adults 18 and older with a body mass index (BMI) of 25 or more are required to take Alli. Adults with a BMI of 30 or more (obese) and those with a BMI of 27 to 29 (overweight) who have other health risk factors such as high blood pressure or diabetes are required to take Xenical.
Lipase is blocked by orlistat. Around 25% of the fat you eat is not broken down and is removed by bowel movements when you take the medicine with a meal.
Orlistat (the active ingredient in Alli) helps you lose weight by lowering the amount of fat you absorb in your intestines. Lipase is a digestive enzyme that aids in the breakdown of dietary fat into smaller components so that it can be used or stored for energy.