Facts on FDA-Approved Weight Loss Pills

1. Even FDA-Approved Weight Loss Pills Have Side Effects

Fat-blocking diet pills, such as Xenical and Alli (the half-strength version), come with a variety of digestion-related side effects. These include oily stools, gas with discharge and other signs of the body shedding fat without absorbing it, and can be mitigated by eating a low-fat diet. Appetite-suppressant diet drugs have their own possible side effects, including insomnia, depression and increased blood pressure.

2. Know That These Pills Aren't Magic

FDA-approved weight loss pills include Alli, an over-the-counter medication, and three prescription drugs: Xenical (orlistat, a fat blocker), Meridia (sibutramine) and phentermine. Meridia works by reducing hunger at the origin of appetite in your brain. Phentermine decreases appetite and has been on the market longer than any of the other drugs mentioned. However, any one of these drugs will only increase your weight loss by about 5 to 10 percent; they are intended simply to boost weight loss and not act as a substitute for healthy eating and regular exercise. Don't expect to shed the pounds rapidly after taking a few pills. They aren't designed to work that way, so make sure you have a realistic outlook before taking them.

3. Engage in Healthy Eating and Exercise

Weight loss pills are simply a supplement for weight loss and are not nearly as effective as a good diet and regular workouts. They may boost weight loss, but vigorous cardiovascular exercise and good nutrition will have far better results. So if you're hesitant to try FDA-approved weight loss pills because of the possible side effects, rest assured that you can achieve healthy weight loss with discipline and effort.

4. Dietary Supplements Aren't Regulated by the FDA

Most herbal supplements and weight loss pills sold as dietary supplements do not go through the same testing or adhere to the same standards as prescription medicines. That's not to say they aren't safe; many are extremely beneficial. But just know that not everything sold in capsules in a bottle at the drugstore shelf has been reviewed by the FDA.

5. Get a Doctor's Supervision

Never take prescription weight loss aids without the approval and oversight of your doctor. Don't use a friend's prescription or buy weight loss pills without your doctor's approval, since your doctor will need to make sure the aid is right for you and your condition. People with heart problems should not use Meridia, and those on the drug are advised to have frequent blood pressure checks.

Last updated on: Apr 26, 2011

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