supraventricular tachycardia
"I have been on this medication a couple of years for supraventricular tachycardia and hypertension and have not had ONE episode of SVT since being on it.  I used to get SVT once or twice a month, so this medicine has truly made my life better.  The problem I now face is with my insurance company since they are hiking up non-generic co-pays to 4 times as much as before.   Since there is no generic until 2011, I must either forego this medicine and try something else or pay something I can't afford.   This is frustrating when I know the medicine works."