Goodness. You are braver than I.
Several years ago I took ONE of those and my client brought me a donut when she came in for her appointment. Don't want to be rude, right? So I ate the stinking donut.
YYUUMM,..NO. there was a homicide in my stomach for the rest of the day. Terrible. I stayed in the restroom for the rest of the day.
I can see how it will help with the BM's, but doesn't it work to block fat and that's why you are going to the restroom? No fat = no poopy. Maybe a supplement that encourages bowel movements? I see several people posting on here drinking smooth move tea and a couple of other options.
I'm sure your doc can tell you his preference, if in doubt. I don't think I would want something as aggressive as Alli.
Hope you find something that keeps things moving.