In spite of warnings we read about the dangers or side effects of diet pills, they remain to be marketable. Well, not all diet pills have the same side effects, just as not all of them have the same ingredients. Some contain ingredients which are very harmful to the health, and are, therefore, prohibited; others remain in the market although they contain formula with not-so-good side effects. The rest are safe but not as effective as they claim to be. Still, there are others which are safe and effective. A responsible person who intends to take diet pills should look into the ingredients of a pill and know whether they are safe or effective before deciding to use it. There are pills which have reportedly cause heart problems, problems with the nervous system, liver damage and even death. It is wise to know about the safety and effectiveness of diet pills by reading medical studies and consumer reviews. Websites such as www.dietpillsideeffects.com may be of help.