supraventricular tachycardia
"I was put on metoprolol 50mg after my heart started to race every time I would move or do anything. The 50mg helped some but didn't keep it all the way down so then they tried me on 100mg which did the trick while I was moving but then when I wasn't it was dropping between 30-40beats so then they tried just 25mg 4 times a day and I was still having problems. It made me tired. I don't know if part of the problem is the doctors I have been seeing don't know what exactly is wrong with my heart and why it does this. Just yesterday I went to the ER after being in the hospital for a week and the doctor gave me propranolol 10mg 3 times a day which is helping. "