The same thing happened to me. I expected to see "orange oil" in the toliet half an hour after I first took it. To my surprise, I didn't go to the bathroom for 3 days or so and then FINALLY it started working. The side effects have gone hand-in-hand with my eating habits. The less fat I eat, the better it is. I have had a few really fattening meals and really "paid for it".

The good news is, after 7 weeks, I'm down 15 pounds! Woo hoo!