Hi, my advice is the only pounds you will loose on these is the ones out of your purse!
I have used Alli and like the previous poster said, a sanitary towel is essential throughout the day as the fat that isnt absorbed has a habit of "leaking" - (and believe me you daren't fart unless your within 2 meters of a toilet lol)
the thing with alli/xenical is that you need to have a 100% far free diet for them to even have an impact (sorry bad choice of words no pun intended lol!)
Ive used Adios (herbal) and found that once again the only real benefit of these is that they contain dandilion extract which is a natural diuretic so if you have water retention it will help pass this - however it will in turn dehydrate you so you will need to take on board more water, but that will help flush your system through, so it can be a bit of a catch 22 -
but, neither tablet will help you loose fat from your body
alli (when used properly) will prevent fat from going in to your system but it wont help you loose the fat you are already storing
If your wanting to burn fat, the best approach is, a sensible diet and regular cardio workouts to aerobic level when its burning fat - and not pushing yourself to hard as when the heart starts training and you dont loose fat (anerobic).
Hope that helps
V x