Ive been on beta-blockers since 99,, the first kind I was on I was having what the docs called breakthrough symptoms (lightheadness and
dizzy). The docs I see now put me on Toprol XL
,, 2x a day, been on this for over a year now and not much in symptoms,, but I do have them but not as often. My EP doc said when I start getting symptoms to call him and they will put me in the hospital and put me on antiarryhthmia drugs, then next step will be the ablation.