supraventricular tachycardia
"I was started on this medicine after a trip to the ER. I have been dealing with Supraventricular Tachycardia my whole life, and at 49 it finally came to this point. Since starting the metoprolol, I have had heart flutters every day, all throughout the day, as well as some chest tightness, which I previously have not had. It also caused sun sensitivity and increased/extreme sweating. Although I have not had another serious attack, the side effects way outweigh any benefit for me. I decided to stop taking the metoprolol, and the heart flutter has greatly decreased, as well as the sweating. Next step for me is an ablation."