Popular Over-the-Counter Diet Aids
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Popular Over-the-Counter Diet Aids
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Healthwise
Topic Overview
There are many over-the-counter products for weight loss. Individual products often contain several ingredients. Some contain 20 or more. It’s important to read the label before you buy.
The one thing all these ingredients have in common is that none of them have been proved to be both safe and effective. And taking any diet aid makes it hard for you to listen to your hunger signals so that you can have a normal relationship with food.
Most over-the-counter diet aids don't work. And those that do work come with warnings about their safety. Doctors don't recommend any of them.
Diet aid | What it claims to do | Is there evidence that it works? | Is it safe for most people? |
| Alli | Blocks fat from the food you eat | Yes | May cause side effects |
| Apple cider vinegar | Burns calories, lowers appetite | No | Unknown |
| Bitter orange | Burns calories | No | Probably not; related to ephedra |
| Caffeine | Lowers appetite | No | Yes |
| Cascara | Acts as a laxative so you lose water weight | No | Long-term use may cause health problems |
| Chitosan | Blocks fat from the food you eat | No | May cause health problems |
| Chromium | Burns fat | No | Yes |
| Conjugated linoleic acid (CLA) | Burns fat | No | Mild to moderate side effects |
| Country mallow | Burns calories | Yes | No; contains ephedra |
| Dandelion | Increases amount of urine so you lose water weight | A little | May cause health problems |
| Ephedra | Burns calories | Yes | No; banned in U.S. |
| Glucomannan | Acts as a laxative to absorb water, so you feel full sooner | A little | Yes |
| Green tea | Burns fat | No | Yes |
| Guar gum | Lowers appetite | No | Yes |
| Guarana | Lowers appetite | No | Yes |
| Guggul | Aids weight loss | No | May cause side effects |
| Hoodia | Lowers appetite | No | Unknown |
| Hydroxycitric acid (HCA) | Lowers appetite | No | Yes |
| L-carnitine | Burns fat | No | May cause side effects |
| Laminaria | Burns calories | No | Unknown |
| Licorice | Burns fat | No | May cause health problems |
| Psyllium | Acts as a laxative to absorb water, so you feel full sooner | No | Yes |
| Pyruvate | Lowers appetite, burns calories | A little | Yes |
| Spirulina (blue-green algae) | Lowers appetite | No | May cause side effects |
| Yerba maté | Lowers appetite | No | May cause health problems |
Last Updated:
February 23, 2010- Medical Review:
- Ruth Schneider, MPH, RD - Diet and Nutrition
Adam Husney, MD, MD - Family Medicine
Rhonda O'Brien, MS, RD, CDE - Certified Diabetes Educator
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