I was on verapamil for paroxysmal AF. I am really sensitive to the drugs so the Dr agreed for me to take half the 40mg dose three times a day. But I felt dizzy so he suggested I take it if I have AF, like a pill in pocket. However on Thursday I had repeated episodes of AF so advised to start verapamil again. Not had any further episodes thank goodness so perhaps it works; I felt one starting but it did not last. Now I feel unsteady on my feet. Has anyone had side effects that pass once you get used to the drug? How long did you have to wait for this to happen?