Hi everyone, after having my bisoprolol increased to 2.5 ( low dosage I know) I worry about my heart rate. being hospitalised last week with chest pains and af at 178, I saw cardiologist who increased the dose from 1.25 to 2.5, as before when on that dose I was so lethagic and had a job to walk. He knows my heartt rate is slow 48/50. has anyone had the experience of further reduction in rate due to increase of meds. It seems very slow to me now and some days I feel really unwell. Please help me to understand this. Thanks.