I have posted on this board several times speaking of my experiences with Ultracet and heart palpitations. As an update, I am still having alot of palpitations. Alot being one every 20 seconds are so. I have seen a Cardiologist, Internal Medicine doctor, Neurologist, addictions counselor, and a Christmas Eve ER visit. Anyway, I finally satrted to take a beta-blocker which helps a little bit but I am still having the palpitations. I am also having extreme rushes of anxiety. It feels like adrenaline rushes. This whole journey began when I started taking Ultracet for back pain. I took it for six weeks. I liked the euphoric effect it gave me. I did noticied side effects from it. These included itchiness, flushing in the face, and problems urinating. After like four weeks of taking it I went from 4 pills a day to 6. I did this for a week then I decide to go back to 4 a day. When I did this I started to get the heart palpitations. When I started to get the heart palpitations I freaked and stopped taking the Ultracet all together. I tried to call the doctor who prescribed the Ultracet but he would not speak to me about it because it was Christmas Eve. Anyway, I went through extreme sypmtoms that first week. I was so restless I could not sit down even for a second. I had night and day sweats, and a wierd metal taste in my mouth. I had extreme problems sleeping. All this time I had heart palpitations. At this time, I am two months out since I quit Ultracet and I am still having palpitations and adrenaline rushes. The only test I am waiting to come back is a urine test to test my adrenaline levels. I know all of this is probably withdrawal but the doctors insist it is not. So that makes me worry that something else is wrong with me. I am just so discouraged. I really went into this thing thinking I could outlast it but it is not going away. I really feel like something in my body has been permantely damaged and my body will not return to normal. If anyone has experience heart palpitations for a extended peroid of time please let me know. Since I constantly have them it is steadily bringing me down.