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A 24-year-old male asked:

Does xenical blocks all the fat you eat the whole day?

2 doctor answers3 doctors weighed in
Dr. Patrick Kohlitz
Internal Medicine 11 years experience
No: Xenical or "orlistat" is a lipase inhibitor which means it inhibits your body from digesting some fats which are then excreted in feces. With that being said, it is not 100% effective and different types of fats will be absorbed.
Dr. Marina Glibicky
A Verified Doctoranswered
A US doctor answeredLearn more
Xenical: Xenical is a drug with the primary effect on lipase, the digestive enzyme. Xenical blocks lipase and basically prevents dietary fat from being absorbed. Approximately 30 % of the daily consumed fat will be eliminated.

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Last updated Sep 29, 2016
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