Managing treatment effects

Unlike most weight loss products, alli™ has very few side effects because your body minimally absorbs the active ingredient. The main side effects, known as treatment effects, happen when you eat a meal with too much fat while taking alli.

Check out our most frequently asked questions about alli.

Don't splurge on fatty foods

Treatment effects are especially likely if you eat a meal with more than 15 grams of fat. On other weight loss programs, you may "save up" your fat allowances for the day and then splurge on a high-fat meal or dessert. alli is different.

If you don't stay within your fat-gram target when you take alli capsules, you may experience treatment effects. So make sure to distribute your fat grams evenly across your meals for the day. That means you'll limit yourself to an average of 15 grams of fat for each meal, depending on your own fat intake goal.

If you do have treatment effects, you may see them up to 48 hours after taking an alli capsule and eating a meal with too much high-fat food. You can help prevent future treatment effects by finding the cause and avoiding that food. Write it down in your journal, located in the alli starter pack.

The first few weeks with alli

In the first week or two of the alli program, be prepared for possible treatment effects.

Although many users will experience these effects, in most cases, the effects are mild and typically subside within a week or two, as you adjust to your new diet. Most users who experience some initial treatment effects find them manageable and stay with the program.

Reducing the likelihood of treatment effects

For best results, take alli capsules exactly as directed, and stick with a reduced-calorie, low-fat diet. You may have treatment effects again if you slip and allow your meal to include more than 15 grams of fat.

If you don't experience any effects, don't be concerned and think that the alli program is not working for you. It's likely you're doing a great job following the plan.

And remember, if you cannot commit to following a reduced-calorie, low-fat diet, you may experience treatment effects. So be sure you are ready for alli. Remember, you'll get help planning meals, reading food labels, shopping for the right foods, and more. When you are ready, alli will help you every step of the way.

View alli in action in the digestive system.