I too suffer from PVC's. I was taking a diuretic for years for my high blood pressure. However, when I started suffering from more frequent PVC's, my PCP sent me to a cardiologist who took me off of the water pill. He said the water pill can cause you to lose too much potassium which can cause PVC's. However, after stopping the pills it still didn't help in controlling the PVC's. In fact I'm experiencing them now and have for about the past three hours.
My Primary Physician said that like you, added water may be causing the PVC's and said that the Hydrocolorot should reduce that. I never complained of bloatedness or weight gain so i was a little unsure of what benefits this medication would give me. My Cardiologist took me straight off of them and replaced them with Lisinopril which is a blood pressure med as I was complaining of dizziness and said it would compliment my usual blood pressure med Toprol. I still have the dizziness and PVC's though so the change didn't make any difference!!
I'm curious, did your cardiologist give you a reason for taking you off the diuretic?
I was told the same thing and was put on the Hydrocolorot diuretic by my Primary Care Phsician but I still had the PVC's. When I visited my Cardiologist, he took me straight off of them!! I too like you had Xanax prescribled to me as they were the only thing that helped. My doctor made me stop them as they were only for short term use and guess what? the PVC's returned. Got used to them now but can still be bothersome, especially the dizzines/light heads. I've just started taking a Hawthorn supplement which is supposed to help with PVC's so I'll keep you and everyone posted on what I think about it!!