Most appetite suppressants are used as a short-term treatment for people with obesity. Not

Prescription weight-loss drugs aren't intended for people who just want to lose a few pounds for cosmetic reasons. They're generally reserved for people who are unable to achieve or maintain a healthy weight through diet and exercise, and often have health problems as a result.

Some side effects with Xenical include abdominal cramping, passing gas, leakage of oily stool, increased number of bowel movements and the inability to control bowel movements. These side effects are generally mild and temporary, but may be worsened by eating foods that are high in fat. Patients should start and maintain a low-fat diet (less than 30% of calories from fat) before starting treatment with Xenical.