Diet Duo Review

Editor's Review: 3.5 / 5.0

What You Should Know

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Diet Duo is a weight loss product produced by Swanson Vitamins. It is a combination of two ingredients designed to help you reach your weight loss goals. If you are looking for a supplement to help you increase your overall weight loss, this could be the answer. Read this review to learn more about the product and decide whether or not it is worth your investment.

List of Ingredients

Diet Duo contains the following ingredients: Phase 2 Carb Controllerâ„¢ (Phaseolus vulgaris L.) (white kidney bean – dried bean fraction), LipoSan ULTRA® Chitosan (from shellfish).

Product Features

The Phase 2 Carb Controller is made from white kidney bean extract, which is known to work as an effective carb blocker. It helps with weight loss by blocking a percentage of the carbohydrates you eat from being digested by the body and therefore converted to sugars, which turn to fat. Chitosan is a similar ingredient, except instead of working to allow fewer carbs to get digested, it works to allow less dietary fat to digest into our systems. The LipoSan Ultra is a fiber supplement that will help bind fats right away, while the chitosan will take roughly two hours to kick in and get to work for the long term. As the chitosan comes from shellfish, this is not a vegetarian safe product, and is not safe for those who are allergic to shellfish. One bottle, priced at $16.99 contains 120 capsules. You are instructed to take two capsules before each meal, so it provides 60 servings, or enough for 20 days of use.

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  • Diet Duo contains proven ingredients to help block the digestion of some fats and carbs from your diet.
  • The product is reasonably priced at around $17 a bottle.


  • Diet Duo does not contain appetite suppressants or fat burners.
  • This product has mixed reviews.
  • This product is not safe for people who are allergic to shellfish.
  • There are no free trials of this product.
  • Eating a diet high in fat with a supplement like this may lead to stomach upset and bowel movement issues.


Diet Duo could be a good investment, but it will not work the same way an appetite suppressant or fat burner will. The carb and fat blocker will prevent some of the nutrients from getting digested, and you will have to carefully watch what you eat if you want to avoid intestinal upset. If you eat like you normally do and do not try to make healthier choices or a reduction in calories, you will not likely see the results you are looking for. You should also be exercising on a regular basis to create a caloric deficit to allow the supplement work more effectively.

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