Diet Pills come in about three different varieties - doctor prescribed, over the counter (OTC) and herbal supplements. The only way to buy doctor prescribed diet pills is with a medical doctor's doctor prescribed. Prescription diet pills are tested and continually monitored by the Center for Drug Evaluation and Research at the Food and Medicine Administration (FDA). You can buy OVER THE COUNTER diet pills at a drugstore, pharmacy, health food or vitamin store. OVER THE COUNTER diet pills are still monitored by the FOOD AND DRUG ADMINISTRATION Center for Drug Evaluation and Research. To purchase herbal diet pills or dietary supplements at drugstores, supermarkets, vitamin and health food stores. The FOOD AND DRUG ADMINISTRATION considers herbal weight loss supplements to be food products, which fall under the control of the Center for Food Safety and Applied Nutrition which is subject to different guidelines than the Center for Drug Evaluation and Research.

For prescription diet pills to come on the market considerable tests has to occur which takes years of research. For that reason they are often the most effective products you can buy when you want to lose weight. These are however also the most expensive, and require a prescription from a doctor to obtain. For this reason they were not meant to help you lose 10 to 20 pounds before your next interpersonal outing. Prescription diet pills are made to be taken by people who are so obese it is creating major concerns for their all around health.

Prescription diet pills work by using one of two primary strategies. They either surprising your appetite or blocking your body's ability to absorb body fat. Diet pills do precisely what their name suggests they do, they excite your brain into thinking that your belly is full. Specifically they target norepinephrine and serotonin which goes to the hypothalamus region in your brain, and creates the "full stomach" sensation. When you think your abdomen is full you eat less you commence to lose weight. A wide variety of commercial products from different manufacturers are designed to suppress your hunger.

Other Weight loss pills help you lose weight by blocking your ability absorb excess fat. The pills cause a reduction in the lipase enzyme. With less lipase your body has a limited amount of fat it can absorb. In recent months studies have shown other prescription medication used to take care of depression or Alzheimer's disease shows similar qualities to the prescription drugs.

While prescribed drugs may be some of the most effective products on the market they should only be used under the right circumstances and only when approved by a physician.