high blood pressure
"I was placed on Bystolic and Flecainade to control atrial flutter. It took three weeks for this combination to work but it did and my heart rhythms became stable and stayed that way. I later had an ablation, which cured my Atrial flutter and Atrial fibrillation. I experienced several of the common side effects: low libido, near impotence, and chronic diarrhea, which has resisted all efforts to correct. 

Recently I decided to discontinue it and did so. Pulse went from 70 to mid-80's and blood pressure crept up so did a taper per the literature. After being off it for a week, pulse rates as high as low 90s, blood pressure going up daily to 140's. Have started taking it again. 

This medicine is quite difficult to get off. Keep this in mind when considering whether to take it."