I was on Metoprolol Succinate 25mg twice a day for 15 months. I slowly developed all the symptoms you could imagine. I was also on Paxil at the time. I thought that the symptoms were from the Paxil so I weaned off them. The symptoms continued to slowly worsen over time. The light headedness/dizziness got to the point were I was barely able to drive a car and function. The doctor finally agreed that it "may" be the Metoprolol and to wean down to half a tablet once a day for a week. After researching I extended the wean to three weeks ending with 6.25mg once a day. Day one off of Metoprolol was great ... then the withdrawals hit, terrible first week... felt like I was going to faint all the time and ended up in the ER. Everything was fine after all the tests were run, and sent home. On day 16 now and feeling better, some lingering symptoms like head tightness/tingling, and a bit of dizziness (nowhere near as bad), a few palpitations, and some temporary spikes in BP and HR ... oh, and on day two my teeth hurt ... haven't seen that one on the forums before.