How exactly do weight loss pills work?

It varies: Most weight loss pills over the counter have substances in them that are a type of naturally occurring caffeine to give your body an energy boost. Some people consider this a slight increase in metabolism. Also, they often have some type of appetite suppressant or water pill. There are various types and i recommend you ask your physician prior to taking one.

Three FDA approved: fat blockers (xenical), amphetamine, and serotonin drugs change appetite. And in all, when you stop them, the weight comes back because they do not change behavior. eat less, exercise more. the psychological barriers to that closely fit with all other compulsive behaviors. http://www.amazon.com/dp/0692496157/ details (in a highly tongue in cheek way) the science and practical ways to change.