Have you or someone you know taken the weight loss drug Orlistat, marketed as Alli (OTC) and Xenical (prescription)? Our colleagues at Consumer Reports would like to know what kind of side effects you’ve experienced for a future article, no matter how disgusting.

See, orlistat is under investigation by the FDA again. Alli made an appearance in our disturbing side effects collection back in April. “… gas with oily discharge, an increased number of bowel movements, an urgent need to have them, and an inability to control them,” we quoted. 7.7% of patients in one Xenical study experienced “fecal Incontinence.” Other, less common, side effects are scarier and deadlier.

Send your orlistat side effect horror stories to tips@consumerist.com with “Orlistat” in the subject line, and we’ll send them along.

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