I am 79 years old, and suffer from fatigue and an erratic heart rate, today it was 35 at one point. I take felodipine, but I haven t taken it for three days. When my blood pressure is high, (168/93) I take 2.5 mg of felodipine, but that usually brings my blood pressure down quite low. (102/64) My heart rate varies from 72 down to 35 or 40. Today I see a black spot off to one side of my right eye, I don t see that as a symptom of a stroke, but it is new to me. My cardiologist says I do not qualify for a pacemaker.