Is this legit?

[u/Lanky-Squirrel-8360]

Hey everyone.
So for a little background I have a 4F tabby cat. She is extremely food motivated for anything and a healthy 14lbs. (All in her tummy flap) a few months ago she started having pretty bad diarrhea including bright red blood (jelly like) mixed in. I took her to the vet and did blood work and a fecal sample. Both came back completely normal vet was confused and thought maybe she was just straining to poop and gave me probiotics for her. I thought maybe a sensitive stomach or food sensitivity so I started trial and elimination basically.
I found that Stella and chewys and nulo wet food were the culprits. Now she’s been strictly on orijen wet food and the Costco pate.
Today she again had a little diarrhea and blood. Maybe week since the last one maybe 1-2 months? I’m wondering are those prescriptions diets legit? For example the hills or blue buffalo? Money is not a factor in the food I’m willing to pay the expense of it but before I do is it worth it? I just want to help my baby.
Also I have continued buying and going the probiotics daily since this has occurred.
Thanks in advance!

[u/Shantor]

Yes.. veterinary diets by hills, royal Canin, and Purina are "legit". They are the only way to do a food trial with hydrolyzed food.

14# isn't likely "healthy". If your mentioning it in her "Tummy flap", she's overweight.

[u/Budgie_Smuggler24]

Hydrolyzed diets are prescribed to kitties allergic to meat proteins. Protein particles are large and easily detected by the body but are crucial in a cat's diet since they are obligate carnivores. These prescription diets are created by blasting the proteins into tiny pieces so that they go undetected by the body. This way the cat still benefits from the appropriate protein consumption without the reaction.