supraventricular tachycardia
"My doctor prescribed me 5mg concor. When I started my 208-213 bpm heart rate drops to 70-100 bpm. And also said that if this wouldn't help to drop we can make  catheter ablation operation. I also test to give up the pills for 2 days then it again start to beat at 180-200 bpm. So I am good with 1 pill 5mg for a day."