I am new to the AF world, & have been taking Pradaxa for about two weeks with no awful side effects so far. I have taken Verapamil for many years for PVCs (which maybe was actually AF). About a month ago I had palpitations lasting about 20 hours. My GP did an ECG & diagnosed AF & sent me to an EP. She also doubled my Veraprimil dose. My EP said I could go back to my previous dose as long as my HR was under control. For the most part it is, (65 - 75) but I the evening, about 22 hours after taking my Veraprimil my HR goes to 85 - 110. I'd like to stay on the lower does, but I'm not sure that's smart. One issue in taking two doses a day is that the veraprimil must be taken at least two hours after the Pradaxa which makes for a scheduling nightmare.