So she eats purina proplan nf advanced kidney disease. She loves it but it has salmon and carrageeenan. I guess don't worry about it since salmon is not the first ingredient and lots of people feed cat food with carageenan with no problem. The hills prescription does not and has chicken and pork,no as many biproducts. Is carageenan and fish so bad that I shouldn't feed it to a cat with renal disease+? Byproducts I'm not worried about its the other 2 ingredients. Don't suggest not feeding her prescription. I will continue to do so