supraventricular tachycardia
"My cardiologist prescribed one half Watson metaprolol succinate 25  to normalize heart rate in Dec. and this is new form for me and is much better product than Mylan metaprolol tartrate I was on before, it caused breathing and chest discomfort and I quit taking it.  I don't like taking a beta blocker but Watson product I feel is much better and it can help me control heart rate."