I've taken this medication in the past and have had success with it. I started to do a little research today and there are several reports that suggests that xenical does major damage to your liver? I was going to start it up again as I'm about 20 lbs over weight but I'm really worried about this side affect. I can deal with the other unpleasant temporary side effects but am really concerned about damaging my liver. Anyones doctor warn them about this or have any Advice or thoughts on this?