XENICAL is a prescription medication used for weight management in individuals who are overweight or obese. It works by blocking the absorption of fat in the body, thereby reducing calorie intake. XENICAL is typically used in conjunction with a reduced-calorie diet and exercise program to achieve and maintain weight loss. It is not intended for use in individuals who are not overweight or for cosmetic weight loss. Common side effects of XENICAL include gastrointestinal issues such as oily stools, increased bowel movements, and flatulence. It is important to consult with a healthcare professional before starting XENICAL to determine if it is the right option for weight management.