With this new formula. He is almost out of it and I can't afford more so I am going to call the DR tomorrow and see if I can get a RX for it but he is now pooing consistently with out screaming and not vomiting near as much (I think he has only gotten sick once a day since starting it). I am so glad to have a happy baby now. He have been cooing and smiling. Hopefully I can get the RX with no trouble.