Similac Alimentum Infant Formula with 2’-FL HMO is the first and only hypoallergenic infant formula with 2’-FL HMO, a unique immune-nourishing ingredient. It starts reducing colic symptoms due to protein sensitivity in most babies within 24 hours,* so your baby can start feeling better today. * Based on a clinical study with Similac Alimentum Ready to Feed without DHA, ARA, 2’-FL HMO, lutein, and beta carotene in a small group of infants experiencing colic symptoms due to cow’s milk protein sensitivity. Data on File, Study AC84, August 2004. Abbott Nutrition, Columbus, Ohio.