I'm 81, and my iWatch diagnosed my A/Fib about three months ago; both my family doctor and cardiologist missed it. I am on Eliquis, too, but about a month ago, my doctor prescribed Metoprolol 25MG daily. On 13 November, I will have the Cardioversion performed on my heart. The day after taking the Metoprolol, I noticed a surge in energy level, probably twice as much. Before that, I had extreme fatigue. The Metoprolol was a blessing; now I'll see what the cardioversion does.