These pills are not evaluated by the Food and Drug Administration. Pill makers often escape liability when they face lawsuits stemming from their pills’ side effects. They just have warnings hundreds of words long and essentially tell you not to take the pills unless you are perfectly healthy and have no history of any illness whatsoever in your family. Unfortunately, many consumers skip reading these warnings.

Long-Term Effects not Known

Another danger of these diet pills is that since most of them are new, no one knows their long-term effects.

Dependency

Some of the diet pills can make the users dependent on them. This especially holds true in case of those pills that are stimulant-based. The result is that apart from being overweight, you also become an addict.