atrial fibrillation
"I was on Sotolol for one month. While it did slow down my heart rate I was miserable the entire time. I constantly felt my heart was beating differently (this is a difficult sensation to describe). I was tired all the time, slept often during the day and rarely drove or went out even when someone else was driving. I am retired but prior to starting this medication I was active and traveled often. I did not have any afib episodes while on this medication, however, when I stopped taking sotolol I felt great/normal again and didn't have another afib episode for at least 7 months."