The problem is most manufacturers don't support these claims with clinical studies. You ca

First, weight loss pills are divided into two major groups - prescribed or over-the-counter diet pills. Do you like to know which are best? Well, consider the following - prescription weight loss pills are clinically tested and proven to work as they claim. If say Xenical claims to block 25% of diet

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.