I stopped taking Xenadrine about a month and a half ago, after losing 15 pounds. Since then, I still get the light headedness, jitteriness and dizziness that I got whenever I was taking the stuff. I also still have the loss of appetite that came along with the drug. I have also noticed that since I have quit taking it, I have a lot of stomach irratation, like bubbling and burping. Do you think these side effects are from the pills a quit taking almost 2 months ago??? Or maybe something else is wrong with me?? I am going to go to the doctors next week, but I wondering if anyone else had any problems like this? How long does this stuff stay in your system????? I'm really worried that something is seriously wrong with me.