Similac Alimentum is a nutritionally complete, hypoallergenic formula for infants with food allergies, including colic symptoms due to protein sensitivity. Alimentum starts reducing excessive crying due to cow’s milk protein sensitivity in most infants within 24 hours.* It’s lactose-free and has no palm olein oil, which promotes softer stools, more like a breastfed baby. And it has DHA & ARA, special nutrients found in breast milk that support brain and eye development.