My son was colicky after two weeks out of the womb. I was breastfeeding and the baby broke out in a hive like rash on face and arms and back and was very gassy. I was eating a lot of dairy so I thought maybe that was the problem especially since I hated dairy while I was pregnant. Doctors had me try Isomil which was bad for him left him constipated and I decided to try Nutramigen. Baby went from crying 6hrs a day to good baby. For us it was a miracle. We called the the liquid gold milk because it is expensive but well worth every penny.