I have been on Sotalol for several years. I had an ablation 1 year ago and successfully had no AFIB for 7 months. When I had 5 AFIB events in one month, I was put back on the Sotalol which seems to be working well for me so far. The side effects that I have had with this medicine have been mild muscle aches. I try to do cardio exercise 5 days a week for 60 minutes if my schedule allows and I am doing well.