Quote Originally Posted by Brody's Mum
Some BP meds are diuretics (sp) which will explain the peeing more and others are beta blockers. Might be worth checking which ones he is on.
One of the first BP meds I was on was a diuretic. It made me so miserable! I couldn't go anywhere except the bathroom. It also depleted my potassium. My doctor switched me to another one and I only need it every other day. (of course I take 3 other meds every day) It doesn't make me live in the bathroom like the other one did. He really needs to chat with his doctor.

Good luck!