Gerber single-grain cereals are made with natural grains and gentle ingredients ideal for baby's first food and throughout the first year. Breast milk or formula is recommended as the main source of a baby's nutrition for the first year. Infant cereal, such as rice cereal, is typically the first complementary food introduced to infants. Vitablocks nutrient blend for cereals is Gerber's blend of nutrients specifically formulated for its cereals; it provides an excellent source of iron, zinc and 6 B vitamins for infants and aids in your baby's healthy growth and development.