This is what my beloved cat used for kidney disease. I am selling it because she passed away. She was 23 years old. I still have three cats, so I would like to use the money from the sale to buy something that will make them happy. If you have any recommendations, I would be grateful if you could let me know. ■Product Description This is a feline elemental enteral nutrition diet. It is for cats with reduced kidney function, with added vitamins and minerals to amino acids. ■Instructions for Use Mix 1 part Tube Diet for Cats Kidna with 1-2 parts lukewarm water (around 40°C) in a container, and stir to dissolve into a paste.