Originally Posted by Dr. Doolittle
If your cat got crystals while eating Nutro, then he may very well develop crystals again. He might just be one of those cats that needs a prescription diet for the rest of his life.
If he got crystals while eating a cheaper food, then you switched him and he has been fine for a long time, then you might be safe. You may even want to have your vet do a urinalysis while he is healthy and on the Nutro. If he doesn't have any crystals and his pH is good then no need for a prescription diet!
I adopted Nana from the Shelter on Nov 5th, and I gave her Science Diet Kitten Dry. I've no idea what she's been eating at the shelter, but i suspect it's a cheaper food, becuz the free sample I got from the shelter is one of the cheap brand. she's 7 months old when i adopted her. She has hairball symptons after 5 days she arrived. making retching and coughing sound like 5-6 times a day, but did not throw up. 2 weeks after i adopted her I learned about the premium brands and started her on Wellness canned and eagle pack dry. And once i switch her food for 1 week, her hairball symptons disappear, poo and pee not as stinky as before, pooing seems a lot easier for her too, becuz i found piece of hairband, my fallen hair, feather from toys that she ate up , got pass thru and come out with her solid waste.
2 weeks after i switch her food, i bring her in for booster for vacination, and i mentioned to the vet that she's going peeing 3-5 times a day, he said it was a bit exccessive, so take some urine sample and send to the lab. (he took the sample by pressing her tummy and make her urinate in a stainless steel container). Result came back stating she has Triple Phosphate Crystal in her Urine, but she DOES NOT have any infection. he suggest to put her on prescription diet FOREVER. (hills prescription diet c/d OR Medi Cal Preventive OR Royal Canin Urinary s/o)
I know this is a bit confusing, here's the timeline of what happened
Nov 5 - adopted nana from shelter
week 1 - feed sample diet from shelter mix with science diet dry
week 2 - feed science diet dry, hairball symptons, retching and coughing 5-6 times a day, did not throw up
week 3 - science diet mix with eagle pack dry, wellness canned.
week 4 - eagle pack dry, wellness canned. dramatic change in appearance, coat shinnier and softer, look healtheir, less stinky poo, no more hairball symptons.
week 5 - eagle pack dry, wellness canned. Vet found triple phosphate crystal in urine, NO infection, vet recommend to go on prescription diet FOREVER.
week 6 - feed medi cal preventive can.
week 7 - medi cal preventive. stinky poo, less shinny coat.
now should i give her wellness instead of prescription diet, and have my vet do a urinalysis? becuz i suspect she got cheaper food while in shelter and i wanna see if her crystal is gonna diappear while on Wellness
And about the igredients on prescription diets, this is what it says on the label of my cans
Medi Cal Preventive
the first 3 ingredients listed on there is Water, Beef, Chicken by-product
first 3 on Royal Canin Urinary s/o
water, meat by-product, chicken by-product
Hill's prescription c/d
pork by-product, water, pork liver
Now when i go on Medi cal's
it says they use beef, chicken, salmon, does not mentioned about using by-product. And you guys says royal canin / medi cal doesn't use by-product either. Even the owner of the pet store i frequent was surprised to hear that royal canin has by-product in their cans too, so i really wonder why those ones i got has by-product...maybe the one i got here from toronto is different from the ones ppl get elsewhere in the world??
and thanks dr doolittle very very much for the explanation and help!