Hi all, 7 years ago I was diagnosed with AF and put on 10 mg Bisoprolol plus digoxin and diuretics as I also had heart failure. I also had a pacemaker implanted due to low HR. Since then I have always been slightly breathless but for the past year have been so breathless I cannot go up stairs. Once I rest I recover within a minute or so. Has anyone else had increasing side effects with Bisoprolol?