I was super impressed with how fast I received my order. I got it the very next day after ordering it! I tried it for 3 days and not sure if it made my little guy worse it if it was just coincidence. I have recently removed dairy from my diet because they think my baby may have FPIES. I did see that the probiotic said it could have trace of milk protein so that may have made my baby react... I was really hoping it would help my child.