Alli diet pills are like other famous diet medications that are FDA certified and approved that gives a very good result. It is highly recommendable and proven effective to lose weight effectively. Formulations are suited for all overweight patient ages eighteen years old and above. It is safe, quick and affordable. Possible side effect in taking it are flatulence, oily anal discharge, loose stools, frequent bowel movement and hard to control bowel movements. Try it and you can never go wrong in loosing weight.