Not sure if this will help, but here is my experience with PVC's. I started having them several years.........got BAD, couldn't sleep at night, as they kept waking me up. Spent a lot of time (and went to several doctors) trying to figure out the cause. None of them really helped. I finally started going through my blood test results myself, and noticed that my serum ferritin was very high........about 450, as I recall. Ideal ferritin is about 80 or so (from all the research I did). I mentioned that to one of the docs, and she said, yeah, your ferritin is a little high, but that can't be the cause. Well......the way to reduce serum ferritin is to donate blood. So I started doing regular blood donations. After the first one, I noticed the PVC's were somewhat less frequent. After about the third donation, they were gone. And I had other symptoms that faded away also. Now I donate blood 3X yearly, and have my serum ferritin checked once each year, to keep it somewhere around 60-100. I feel great, no PVC's. I have no idea if too much free iron is your issue or not, but it can't hurt to check your serum ferritin. It is an inexpensive blood test.