I feel the phosphorous written content is nearly as little as the kidney rx food. Anything to think about and talk with the vet about if your cat is diagnosed with CKD. I noticed Evangers has an assortment out now that they're touting as very low phos, but I apologize, https://petshopfood44332.blogoscience.com/42403638/pets-online-things-to-know-before-you-buy