| Xenical medication is used with a reduced-calorie diet to help significantly overweight persons lose weight. It also helps to prevent regaining weight previously lost. Orlistat works by blocking some of the fat normally digested by the intestine. Take by mouth exactly as directed by your doctor, usually one pill daily. The full effect on weight may require four to six weeks. Do not increase your dose, take it more frequently or use it for a longer period of time than prescribed because this drug can be habit-forming. Also, if used for a longer period of time, do not suddenly stop using this drug without your doctor's approval. Over time, this drug may not work as well as it did at the beginning. Consult your doctor if weight increases. Fatty/oily stool, oily spotting, intestinal gas with discharge, bowel movement urgency, poor bowel control, or headaches may occur. If these effects persist or worsen, notify your doctor promptly. Intestinal side effects (e.g., oily stool) may increase in intensity if you exceed your daily dietary fat allowance. Tell your doctor immediately if you have any of these unlikely but serious side effects: swelling of the feet or ankles. If you notice other effects not listed above, contact your doctor or pharmacist. Tell your doctor your medical history, including: allergies, digestive disorders (malabsorption or cholestasis), low thyroid function (hypothyroidism), other metabolism problems (e.g., oxalate kidney stones, hyperoxaluria). Xenical should not be used if you have anorexia nervosa or bulemia-type eating disorders. Tell your doctor if you are pregnant before using Xenical. The manufacturer does not recommend use of Xenical during pregnancy. It is not known whether Xenical is excreted into breast milk. Because of the potential risk to the infant, breast-feeding while using Xenical is not recommended. Consult your doctor before breast-feeding. |