So I've been on bisoprolol for the past few months to help with my cardiac arythmia but it makes me so tired. I already have insomnia but this medication makes me feel a level of tired I have never experienced before. I'm 18 and trying to study for my end of year exams but it's almost impossible for me too focus. I've talked to my doctor about it and he said that there was nothing he could do because it's not safe for me to be taken off it. So I'm just wondering if anyone has found anything that can help?