xenical (orlistat).

Xenical is the brand name for orlistat, a medication used to help with weight management in adults who are overweight or obese. It is usually prescribed alongside a reduced-calorie, low-fat diet and exercise program.

How it Works

Orlistat works by inhibiting pancreatic lipase, an enzyme in the gut that breaks down dietary fat.

• This prevents about 25–30% of fat from being absorbed, so the body eliminates it through stool.
• It is not a stimulant and does not affect appetite or the central nervous system.

Common Medical Uses

• Weight loss in overweight or obese adults (BMI ≥ 30)
• Weight management in patients with BMI ≥ 27 with risk factors like diabetes, hypertension, or high cholesterol

Benefits

• Helps reduce body weight and BMI when combined with diet and exercise
• Can improve cholesterol levels and blood pressure
• May lower risk of developing type 2 diabetes in overweight patients

 Possible Side Effects

Because it prevents fat absorption, common side effects are gastrointestinal:

• Oily or fatty stools, loose stools, or frequent bowel movements
• Gas with discharge
• Possible mild abdominal cramps
• Rare: liver injury or kidney stones

 Important Precautions

• Vitamin absorption: Fat-soluble vitamins (A, D, E, K) may be less absorbed; supplements are recommended
• Not for everyone: Avoid if pregnant, breastfeeding, or have chronic malabsorption syndromes
• Drug interactions: Can reduce absorption of some medications (e.g., cyclosporine, thyroid hormone, some antiepileptics)

 Summary

Xenical (Orlistat) is a non-systemic weight-loss medication that helps prevent fat absorption in the digestive system. It is effective when combined with a healthy diet and exercise but requires attention to diet and vitamin supplementation due to its gastrointestinal effects.

I can also create a comparison between Xenical and Wegovy (semaglutide) to show how prescription weight-loss options differ in mechanism and effectiveness. Do you want me to do that?