Prescription Diet k/d+Mobility is clinical nutrition to support kidney and joint health in dogs. It's made in the USA with global ingredients you can trust, and was developed by Hill's nutritionists and veterinarians. This food is proven to improve your dog's ability to run, walk and jump in as little as 21 days, plus increase vitality and alertness in older dogs. 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.