What kind of operation would be done?  My old, old (20), but otherwise
healthy cat has cystitis almost constantly.  She just got off Clavamox
10 days ago and now has it again, and is back on the antibiotic.  2 days
after ending a 10 days of Clavamox, a urine culture was negative.

Eliz

I live Stateside, and this may sound like an oversimplification, but I found
that when a particular cat has a tendency to reacquire cystitis it has been
due to the food s/he eats.

I have 25 inside cats and two who cannot tolerate OTC dry food or any canned
food that has an inordinate level of magnesium.  The only OTC canned food I
feed is Friskies® Turkey 'n Giblets.  A better choice is Friskies® Beef 'n
Liver, but it only comes in 5 ounce cans in my area (Houston TX).  Both
those products are low mag, and apparently tasty.

The dry stuff is Science Diet (Hills®) from Pets Mart or Hills Prescription®
direct from the vet. I have been told that Hill's® is available European
markets.

My outside cats eat Purina Cat Chow, which is OTC, and I keep a close watch
on them to make sure none has adverse reactions from it.  So far, none has.
It's a good, tasty product and high in protein and moderately low in
magnesium.

I learned long ago that by paying the premium for veterinarian approved cat
food I can avoid the cost of the doctor's exam room and the resulting
treatment.

Talk to your vet about what you are feeding the cat--especially with regard
to the magnesium level of the product.

--Catmandu