PURINA PRO PLAN DOG Medium Puppy with OPTISTART is designed for medium-sized puppies, but it is also suitable for gestating or lactating mothers. It contains all the nutrients puppies need to help them grow into a healthy, happy adult. Rich in chicken and specially formulated by PURINA expert vets and nutritionists, this dry puppy food provides complete nutrition at every meal. Our recipe contains OPTISTART, which helps support their natural defences with a blend of essential nutrients. This complete dry puppy food has been specially formulated for dental care; it also helps support long-term health, joint health, and enables puppies’ developing immune systems to react efficiently PURINA PRO PLAN DOG Medium Puppy with OPTISTART also contains colostrum, found in mother’s first milk. Made with high quality chicken, this complete puppy food will help support them all the way to adulthood.