I m a 66 year old who had a stroke last Jan, a PFO closure on my heart in July, and got a pace maker in Aug. I m taking a 81-MG aspirin, 2 flecainide a day (morning and night), a xarelto with dinner, and a lipitor about an hour before bedtime, and a toprol at bedtime. Can you tell me the pros and cons of flecainide and toprol?