Complete Enfamil Premium 3 contains 25 times more iron than cow's milk; IRON promotes normal cognitive development and helps the immune system It also contains numerous minerals, such as calcium for developing bones and teeth; and the zinc is essential for growth Enfamil Premium 3 has been formulated with all required such VITAMINS as 9 times more Vitamin C than cow's milk to favor the system healthy immune and VITAMIN D for strengthening and growth bones helps your immune system *: Thanks to its content in vitamins a, C and D that promote normal functioning immune system Enfamil, child nutrition experts with over 100 years of experience