You have to be really, really careful with Alli. I just read in the last week or so that Alli and Xenical have both been reported to the FDA for causing liver damage. If you think about it, your liver is like your body's natural cleanser. Everything you eat, drink, and consume in any way into your body passes through your liver. Apparently the Alli has a very negative effect on the liver. I wouldn't take that stuff if I were you.