Purina Pro Plan Senior Medium Large OptiAge - Chicken has been specially developed by nutritionists and veterinarians to meet the needs of senior dogs aged 7 years and over. This dry dog food contains high-quality pieces of chicken, as well as the OptiAge formula, which is a unique combination of vital nutrients that has been proven to improve brain function. Improved brain function can have a positive impact on your dog’s attention span and responsiveness, in turn maintaining his activity levels and willingness to play. This specialist nutrition provides your senior dog with all the nutrients needed for his general wellbeing and vitality in old age. Vitamins, minerals, trace elements and fish oil help to keep your dog fit, while also maintaining the health of his teeth and joints, which can experience particular strain as your dog gets older. This kibble is ideally suited to the jaw size of medium-sized and large-breed dogs. Purina Pro Plan Senior Medium Large OptiAge - Chicken is an innovative dog food at the cutting edge of nutritional science, designed to support your dog’s general wellbeing. Purina Pro Plan Senior Medium Large OptiAge - Chicken at a glance: Dry food for senior dogs from 7 years old weighing 10-70kg Specially developed to meet the nutritional needs of dogs with decreasing brain activity Developed by vets and nutritionists: innovative recipe based on the latest scientific research OptiAge nutrient formula: clinically proven to support brain function Healthy ageing: balanced mix of nutrients to support your dog in old age Dental health: select ingredients offer comprehensive dental care Healthy joints: can help to preserve healthy joint function, particularly important for senior dogs High-quality pieces of chicken: delicious source of protein Well-accepted: delicious kibble well-suited to the jaw size of medium and large dogs Please note: This product is not available for delivery to Northern Ireland or the Channel Islands.