I just returned from vet on Nov 4th and go back Nov 18th for followup for my 8 yr old female cat for cystitis.
1) They gave her a shot of Convenia that supposed to last 2 weeks to fight the infection. Well, she still continued to have problems urinating outside box w/blood in urine, etc..
I researched the internet a million places and started doing the below and she seems better, no more spotting outside litterbox and I dont see any more blood, but I will take her back for follow up visit. Below is what I've been doing.
a. At Walmart I got Spring Valley Natural C vitamin 500 mg. Cut it in half and crushed it. Mixed it up in a mixture of just a very little bit of baby food (turkey) and Sheba can cat food. I do this in am then in pm.
b. Throughout day I offer her wet cat food, heat it just a tiny bit in microwave so it smells better to her. She was primarily eating only dry, so very hard transition for me, but its getting there. This way she gets some water in the wet food because she doesn't want to drink alot or much water.
c. I give her 1 CatBerry Treat-Ums twice a day.
(petsmart has this)
d. I give her Natural Care Feline Urinary Support which has cranberry in it. I cut this into qtrs, give her a qrt twice a day, but have to insert them into a Greenies Pill Pocket for her to take it. She's very finicky, so nerve-racking for me, but I have to trick her into taking the cranberry.
(petsmart has both of these also)
I hope this helps. I think the Vitamin C has helped the most. It strengthens their bladder.
Several sites advised on Apple Cider Vinegar is a miracle for this. But geeze, my cat in no way will take it. I tried and tried, you just cant hide that smell!
Or google Home Remedies for Cat Urinary Tract
Good luck!
wendy