Be carefully with betablockers! I forgot to tell my doctor that I had a heart rate of 35 / minute (I rode a lot at that time and for me it seemed to be quite normal). So he gave me betablockers and my heart rate decreased down to 30 bpm.
Later I had a 50+ -check and my doctor stopped these betablockers. I now take some other pills which don't decrease heart rate.
marmotte