Pin Me

Alli Diet Pill: Does it Work?

written by: Nicki H • edited by: Rhonda Callow • updated: 12/16/2009

The Alli diet pill is one of the first over-the-counter weight loss medications approved by the FDA, according to the Mayo Clinic. However, many people wonder how the pill works and if results are worthwhile. Read on to learn more about the alli weight loss program.

  • slide 1 of 5

    What is the Alli Weight Loss Program?

    The over-the-counter weight loss pill, Alli, is approved by the Food and Drug Administration (FDA) for weight loss, according to the Mayo Clinic. This medication is a weakened version of the prescription weight loss pill “Xenical,” which is designed to treat obesity.

    When taking the Alli diet pill, dieters need to make lifestyle changes, such as eating a diet low in calories and fat. Physical activity is also recommended. Getting 30-60 minutes of exercises most days of the week will support weight loss in conjunction with taking the Alli pill.

  • slide 2 of 5

    How Does Alli Weight Loss Work?

    The Alli diet pill works by slowing down the amount of fat absorbed in the small intestines. As a result, less fat and calories are absorbed by the body, which causes weight loss.

    The compound “lipase” is responsible for this process, according to the Mayo Clinic. Alli disables the lipase compound, which prevents the compound from breaking down fat while passing through the digestive track.

    However, patients need to be careful about fat consumption, according to the Mayo Clinic. The Alli weight loss program recommends eating 15 grams of fat (or less) with each meal. The pill is taken up to three times daily with meals that contain fat. If you exceed the recommended fat, uncomfortable side effects may occur.

  • slide 3 of 5

    Alli Side Effects

    Alli side effects are similar to the prescription strength version of the pill (Xenical). If too much fat is consumed, diarrhea, gas or urgent and uncomfortable bowel movements may occur.

  • slide 4 of 5

    Results of Alli

    According to the Mayo Clinic, Alli promotes weight loss, however, results aren’t drastic. Dieters can expect to lose three pounds more (over a 12 month period) then using diet and exercise alone. Most dieters continue taking the medication long-term to sustain weigh loss.

  • slide 5 of 5

    Don’t Forget to Take Vitamins

    Alli inhibits the body’s ability to absorb fat soluble vitamins. For this reason, it’s important to take a vitamin supplement that continues vitamins E, D and A while taking this medication. Always talk with your doctor before taking a new dietary supplement.