This was great for my preemies (28 weekers) when we first came home from hospital, I was adding it to my breastmilk. After a couple months we had to switch when they became more constipated from it. It is very expensive but worth it for those first months home from the hospital. They gained weight and got the nutrients they needed to stay healthy and grow. Transitioned to Similac advance after Neosure. Sign up for coupons on their website to help with the cost!