When a mother feeds her puppy, he receives the perfect mix of antibodies and nutrition to protect and develop his immature protective systems - the immune system, the digestive system and the skin and coat.
But once weaned, his antibody level drops, leaving a gap in his immune protection.
That's why Purina veterinarians and nutritionists have developed New Purina PRO PLAN Puppy with OptiStart. Scientifically formulated with an innovative blend of nutrients including colostrum (rich in natural antibodies) which help extend the protection that starts with the mother's milk. These nutrients help to overcome the immunity gap and provide targeted nutrition for the three protective systems, so a puppy can grow to his full potential.
Specifically formulated for puppies from 3-4 weeks up to 24 months, as well as gestating and lactating bitches, PRO PLAN Puppy formulas are a complete and balanced dog food. They are scientifically formulated to give puppies the building blocks of life that will enable them to grow up healthy and strong.