All of the appetite suppressants work by causing the release of two chemicals, named nor-epinephrine and epinephrine.  The release of these chemicals causes the feeling of less hunger or not hungry at all.  Obviously, if you are not fighting hunger, it is easier to eat less in any program for weight loss.

The consumer version of the PDR (Physicians’ Desk Reference) says that people should take appetite suppressants only for a short period of time, and under the supervision of doctors.  When you build up tolerance for these appetite suppressants, you should stop using them.

The most common side effect of the appetite suppressants is jitters, which people sometimes feel weird and have a sense that their heart is beating faster.

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Basically, weight loss pills fall into two categories and work by different mechanisms.  I am going to share with you about Xenical or Orlistat, the category of digestive inhibitors.  The other category of weight loss pills is appetite suppressants which will be shared in my future articles.

How does Xenical work?
If you want to include Xenical or Orlistat in your program for weight loss, you need to know how it works in your body.  Xenical works by blocking some of the fat that you eat from being digested and assimilated.  It does this by blocking up to 75% of the digestive enzyme lipase, an enzyme which breaks down fat, resulting in as much as 30% of the fat you consume not going to be digested.  This undigested fat cannot be absorbed and is eliminated in your bowel movements.
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You might consider consuming weight loss pills if you are overweight and have tried many times and methods but still fail in losing weight.  In fact, a lot of people feel uncertainty whether weight loss pills are safe for healthy weight loss purpose.  If you have correct weight loss concept, you will be very careful and concern about the ingredients of the pills.

Below are some common and popular ingredients found in weight loss pills or weight loss supplements in the market:

Conjugated Linoleic Acid (CLA)
Over years, both animal and human studies show a positive role for CLA in reducing body fat and increasing lean muscle mass.   CLA is found naturally in dairy foods and beef and is generally considered safe to consume.  Please read my article regarding right supplements for weight loss program if you would like to know study done in CLA.  In fact, CLA is among the hot products in weight loss pills.  However, you need to aware the dosage for optimal results.

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