Well I tried Lactose free milk but it was slightly thicker and my boy wont have anything thicker than what he has now. So I stuck with the nan. The reflux seems to have gone but he is very gasy. Everytime he passes wind, he screams. Not sure how I can fix this. I have tried Brauers, and trying Infants friend at the moment but still not sure if it is the formula that is causing this...