Gerber Good Start Extensive HA is a hypoallergenic formula designed to meet the nutritional needs of babies with cow's milk protein allergy. If your infant is suspected of having CMPA or diagnosed with CMPA, your baby’s doctor might recommend changing from a routine formula to a hypoallergenic infant formula. Gerber Extensive HA is the only hypoallergenic formula to feature B. lactis, a probiotic similar to those found in breast milk to support digestive health. This formula with iron includes DHA to support brain and eye development, and it’s made with 100% high-quality whey protein that’s broken down into tiny pieces to be well tolerated. Feed this gentle baby formula to infants 0-12 months. Mix this baby formula powder with water, and feed your baby immediately or refrigerate and use within 24 hours. This powdered baby formula is packaged in a recyclable tin for simple storage.