Used and recommended by Dr Harry Copper. SMARTBLEND (R) . Precise nutrition for whole body health. It takes a precise combination of nutrients to keep your dog in top condition. Which is why the experts at Purina have developed SMARTBLEND (R) . Inspired by nature and blended with scientific precision, SMARTBLEND is specifically designed to promote your dogs whole body health. *Compared to previous SUPERCOAT Puppy Formula.