Birth to 12 months. Add water. For food allergies and colic due to protein sensitivity. Breast milk is recommended. Use Similac Alimentum to give your baby a strong start in life: It's hypoallergenic and contains a milk protein that is broken down into tiny pieces to virtually eliminate allergic reactions in most babies who are allergic to cow's milk protein; It's designed for babies with colicky symptoms such as excessive crying and fussiness due to cow's milk protein sensitivity.