Saw my neuro the other day, and he convinced me to go back on one of the drugs that the cardiologist thought might be one of the causes of my problem...after talking to the neuro, I realized I ended up in the ER with problems even AFTER being taken off of this drug. So I'm back on it and hope it helps with some of the symptoms...my neuro does extensive research and clinical trials, and knows the meds and their contraindications, so I am trusting him.