Hello Sue, Thank you for your response. I was put on Metoprolol after an A-Fib episode in Jan (my first) to lower BP and heartbeat regulation. I didn't want to be on prescription drugs, but seems I am too late to even think about Beet supplements. I just found out my Echocardiogram shows I am significantly below ejection fraction, which (from what I read online) calls for a regimen of a Beta Blocker, Ace Inhibitor, and Diuretic. Also possibility of a pacemaker. I also have left atrium mod dilated and right atrium mod to severe dilated - also calls for Beta Blocker. The report also said (re: ejection fraction) possible heart valve problems (not sure if that is surgery or???). Also Mitral Valve - which (again online) calls for surgery) I have not met with doc yet to go over Echo report , but I still plan on asking for a change from Metoprolol. So looks like I'm on prescription drugs for the long haul. Guess I'm lucky having gone this long (77yr) without them. Does anyone know anything about Bystolic?