Tramadol
"I have used Tramadol for over 5 years. I am on a 200mg slow release tablet of which I take 3-5 a day. They say that it decreases the heart rate but it seems to me that last night when I checked my heart was doing 190/min....so that blows that theory out of the water. I can tell that it does make you restless and at times reckless and also increase your anger responses. Hope this helps."