Their effects, side effects are studied and known, and if there's no other ways for you to

But prescription weight loss pills are not the perfect - I would say they are far from it and mostly due to side effects and unnatural chemicals applied. The same Xenical gives you a bunch of "additional benefits" like oily spotting, oily stool, possible nausea, diarrhea and more. At the same time,

Another type of weight loss pills is gaining more popularity due to more safe and healthy effect comparing with others - fat blockers. Among prescription drugs it is Xenical, blocking fat by affecting lipase enzymes responsible for fat absorption. It helped many people lose weight along with good dieting regime, but it's side effects include abdomen discomfort, diarrhea, and the inability to absorb a lot of important fat-soluble vitamins and other nutrients.