Uncoated pills can leave a chalky residue on your tongue, or worse, stick to your tongue as you try to swallow. The lack of coating means the pill isn't very slippery and can start to disintegrate the moment liquid hits it.

The Slim-Fast diet requires you to purchase meal replacement bars, shakes and snacks. The plan requires you to replace two of your meals with Slim-Fast shakes or meal bars. Your third meal, usually dinner, can include your favorite vegetables, grains and meat.

It sure would be nice to lose vast amounts of weight by simply popping a pill, but, unfortunately, it's never that easy.

Healthe Trim diet pills may contain all-natural ingredients, but they may not be free of side effects. Some of the herbal ingredients may make you feel nervous, cause stomach upset or even raise your blood pressure.

As you might gather from the name, digestive enzymes help your body break down, or digest, food. While many people supplement their diet with these enzymes as a treatment for pain, prevention of cancer or indigestion, there's very little evidence to support their use as weight-loss aids.

Diuretics, commonly referred to as water pills, are available both over-the-counter and by prescription. Over-the-counter varieties commonly include caffeine as one of the active ingredients, though some non-stimulant varieties include other diuretic herbs, such as juniper extract, parsley extract and couch grass root.

Phentermine hydrochloride is a medication designed as a short-term appetite suppressant for weight loss. This medication is only a part of a weight-reduction program that includes dieting, exercising and counseling.

Optifast and Slim-Fast are meal-replacement weight loss plans, substituting their products for at least two meals a day. Both programs offer shakes and bars, and Optifast adds soups to the menu. One major difference between the two is how they are administered.

Phentermine is an appetite suppressant and stimulant. It works in much the same way as amphetamines. Phentermine affects the central nervous system. It is used along with exercise and a healthy diet to help obese people lose weight.

Nearly 40 percent of adults in the United States are obese, according to the Centers for Disease Control and Prevention. Many weight-loss diets leave people feeling hungry, making the diet plans difficult to follow over the long term.

Phentermine is a prescription drug used to suppress appetite. Physicians usually prescribe phentermine to significantly overweight or obese people, not to people who want to lose a few pounds.

If you have malabsorption, your intestines don’t properly absorb nutrients like vitamins and minerals, fats, proteins or carbohydrates. Many different medical conditions and diseases can cause malabsorption, typically diseases that affect your gastrointestinal system.