Prescription Diet k/d + j/d is clinical nutrition to help protect vital kidney function and increase mobility in dogs. Formulated with ActivBiome+ Kidney Defense, a proprietary blend of prebiotics shown to activate the gut microbiome to help protect kidney function. It’s made in the USA with global ingredients you can trust, and was developed by Hill’s nutritionists and veterinarians. This food contains nutrition to improve dogs' ability to run, walk and jump in as little as 21 days. It also includes clinically proven antioxidants, and is formulated to promote a urinary environment that reduces the risk of developing struvite and calcium oxalate crystals. Please consult your veterinarian for further information on how Prescription Diet foods can help your dog continue to enjoy a happy and active life.