Prescription diet pills

Prescription diet pills are diet drugs which are regulated by the Food and Drug Administration agency (FDA). In FDA, their side effects are monitored constantly and advertised and prescribed for weight loss under certain condition and in prescribed dosages.

If your weight is such a problem that it makes a regular diet and exercise program difficult to undertake diet pills may be prescribed to help you lose weight.

These drugs are also very useful for those who are in urgent need of losing weight for health related reasons. For people who suffer from heart disease or diabetes, or are at risk of stroke, being over weight can present an immediate threat to there lives. Drugs in these cases can serve to jump-start the weight loss process, immediately lowering their risk to related health problems.

There are 2 basic types of prescription weight loss pills that differ by the way they affect our body.

Appetite suppressants

The components in appetite suppressants restrain activity of sections in our brain, responsible for the rise of appetite. A decrease in appetite is most effective in the first few weeks of its intake and it gradually reduces with time.

Appetite suppressants used in combination with a healthy diet and exercise plan are quite effective as a method of struggle against excess weight, and they helped lose weight to many people during decades.

But currently only one appetite suppressant is available for sale. This is Meridia.

Fat blockers

The components in fat blockers prevent the lipase action, which is responsible for fats assimilation by your body. So, part of fats from the meals you've eaten passes through your body indigested, and is lead out naturally.

More, fat blockers do not affect your nervous system, and medical professionals advise using fat blockers for long term and substantial weight loss.

The most known chemically based fat blockers are Xenical and its over-the-counter analog Alli.