I have been taking alli for a few weeks now. It has worked to help me lose weight... but even if I eat the amount of fat grams it tells me I can, I have embarrassing treatment effects. So I quit it today. The few extra pounds it helps me lose is not worth the embarrassment. So I was wondering how long it will take to get completely out of my system. And just to let you know, I NEVER ate more fat than the alli program told me to and I STILL had the "treatment effects".