I'm sorry to hear that Irwin's bladder walls have become thickened. Hopefully he's feeling better since his bladder stones have been removed. I'd also wait and see what happens and hopefully he'll be with you for quite a while yet. I'll continue to keep him in my thoughts and prayers.

I typed in meds for the thickening of the bladder in cats and I came across this: http://cat-bladder-problems.com/blog...er-thickening/.

I've also heard and read this:
Cosequin and Feline Urinary Diseases:
Cosequin glucosamine and chondroitin joint supplements have been found to improve urinary bladder health in cats by producing a protective coating on the inside of the bladder wall.