Which drug is an anti-obesity agent?

• A. Lesofat
• B. Orlifast
• C. Xenical
• D. Orlicin

Answer: (C)

The idea being tested is how some anti-obesity drugs work. Xenical contains orlistat, which acts by inhibiting pancreatic and gastric lipases in the gut. This stops triglycerides from being broken down into absorbable fatty acids and monoglycerides, so a significant portion of dietary fat isn’t absorbed and is excreted in the stool. That reduces the calories absorbed from fat and supports weight loss when used with a reduced‑calorie diet and exercise. Because its action is local to the gastrointestinal tract, systemic effects are limited, though it can cause GI side effects like oily stools, flatulence with discharge, and potential fat‑soluble vitamin deficiencies if fat intake isn’t balanced. Among the options, Xenical is the anti‑obesity agent; the other names don’t correspond to approved obesity drugs.