I had thought nothing of it, but when I mentioned it to my doctor, she stated it was likely due to the medication and the Prilosec has definitely solved that problem for me....
I'm a 20 year old female and I take Flecainide twice a day for my arrhythmia and the only negative side effect I have had is heartburn, but it has had and extremely positive effect on my "off beats"...
First I'd like to give my thoughts to your little sister, I hope she is doing well and staying strong. Second, the PVCs: for me they are induced by stress and strong emotions as it seems like you are...