If your medium or large breed dog is over the age of seven, they may benefit from a food tailored to his particular requirement, such as PRO PLAN® DOG 7+ with OPTIAGE®. This complete dry dog food has been specially formulated to support older dogs by meeting the specific demands of senior dog nutrition. The PURINA® vets and nutritionists behind OPTIAGE® have created a patented* blend of nutrients proven to enhance brain function, increase activity levels, and promote liveliness and interest in play for ageing dogs. As well as helping to take care of their brains, our senior dog food with OPTIAGE® is specially formulated for dental care and to help support healthy joints. Made with high quality pieces of chicken, your senior dog will love every mealtime - and you\'ll know that with each mouthful, you\'re helping to support his health. Through our exclusive, patented* blend of nutrients, OPTIAGE® is proven to enhance brain function and helps increase activity levels, liveliness and interest in playtime so you can keep living an amazing life together