Ive tried all sorts in past from over counter, online etc... None of them actually helping but as I'm quite poorly due to a number of conditions my doctor has prescribed orlistat which helps get rid of fat from food, on sw in past without tablets id lose 1-3lb now with tabs i lost 7lb one week so almost doubled so they def work. My friend said she was on alli which is a lower dose of orlistat u can buy from chemist or large stores and from how it reacted to her sounds like it does same as tabs I'm on just a bit lower x