U.S. doctors online nowAsk doctors free
A 46-year-old member asked:

is xenical highly effective in losing weight?

2 doctor answers3 doctors weighed in
Dr. Vasu Brown
Integrative Medicine 34 years experience
Effective somewhat: Xenical is a drug that promotes loss of weight by preventing the digestion and absorption of fat in food. In the intestine, an enzyme called lipase (produced primarily by the pancreas) breaks apart fat in food so that it can be absorbed into the body. Orlistat blocks the action of lipase and thereby prevents the breakup and absorption of fat. Orlistat blocks absorption of about 25% fat in food.
Dr. Matthew St. Laurent
Bariatrics 29 years experience
Not highly effective: Works as a fat blocker. Can help at losing 5-8% of excess body weight if used long term and if can remember to take before a fatty meal. Can have some unpleasant side affects such as oily foul smelling stool, increased flatulence and sometimes incontinence when passing gas. Probably better for short term use. No studies show long term (greater than 5 yr) effective weight loss.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

Similar questions

A 47-year-old member asked:

Has anyone tried xenical (orlistat) for losing weight successfully?

1 doctor answer1 doctor weighed in
Dr. Steven Charlap
Holistic Medicine 37 years experience
Works for some: Orlistat works by interfering with fat absorption in your intestinal track. As a result, your body absorbs last fat from your meals. The downside is it can cause sudden watery stools. And by sudden, i mean really suddenly and unexpectedly. It can put you in embarrassing situations. I recommend against its use.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Nov 7, 2014
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits
$15 per month

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.