Alli™ (
orlistat) is an over-the-counter (non-prescription) medication used to aid in weight loss. It is currently the only non-prescription
weight loss drug that has been approved by the U.S. Food and Drug Administration (FDA). Alli is actually a non-prescription version of
Xenical®, a prescription weight loss medication that has been available for several years.
Alli is approved for adults with a
body mass index (
BMI) of 27 or greater
(see BMI Calculator to find your BMI). It is intended to be used along with a reduced-calorie, low-fat diet. Not only will such a diet help you lose more weight, it will also help prevent many
Alli side effects, particularly the side effects that affect the
digestive system. Each Alli starter pack comes with instructions and a code that allows you to access my
alliplan, an online tool designed to help you in your weight loss efforts. This tool includes many useful tips, recipes, and other features, and can even tailor a specific weight loss plan for you based on a brief survey that you take.
Alli works by decreasing the absorption of fat from your diet. The stomach and intestine have enzymes, called lipases, that break down fat into smaller molecules which are then absorbed from your digestive tract. Alli binds to lipases and inhibits their activity, helping to decrease fat absorption. Alli does not have any effect on carbohydrates or protein.