Alternatives To Amlodipine For Blood Pressure

Updated
Dennis Says:

I suffer from mysatheina gravis. I've been having a lot of trouble with my blood pressure being very high / out of control, with a low pulse. Now I've been told i need a pacemaker and I think i need a new blood pressure tablet. Can you make any suggestions? I'm 70 and my blood pressure has always been irregular. Now I've been told I've got a heart block. My myasthenia can cause bradicrdia. I currently take Amlodipine. Can anybody suggest alternative meds?