I have taken xenicalt for three weeks. I have not lost much weight, probably about 1kg. I eat no much fat food, two meals a day. so I only take two xenical a day. It do happened to me for oily stood and leaking oil once in a while if I eat faty food. I am running toilet. Have a look at the website, most of people lost a lot of weight within a few weeks, but it seems not work efficiently on me. I wondering if I should eat faty food to allow xenical work better? Thanks.