Hi, saw the specialist last week and he wants me to take the low dose beta blocker-too scared to take it as I get dizzy already. Ecg in office slowed ventricular ectopics but I had thought these were less dangerous. However now have to go for the tread mill ecg and the 24 hour holter one. Now more anxious. Is it possible these are just caused by anxiety? had occ ones all my life really but now getting lots and I am 55 and post meno so just put it down to that but always tired too!