supraventricular tachycardia
"I started having really bad tachycardia episodes and my primary doctor tried to convince me it was anxiety. After lots of tests and wearing a heart monitor for a month my cardiologist said I had Supraventricular Tachycardia and I was put on metoprolol 12.5mg twice a day. It's great! I haven't felt this calm and comfortable in years! Doctors really need to stop assuming that anxiety is the diagnosis of everyone's problems. There's a bit of drowsiness and fatigue in the beginning but that goes away as your body gets used to it. I am very happy with this medication."