Hi, my 5mth old DS is breast fed. He has reflux, but I am wondering if the cause is a lactose intolerance. He has been on Zantac for 11 weeks and it is not working. Today has been a nightmare, barely eating, burping constantly and thrashing around BUT he has fallen asleep OK, which I don't understand. My HV says that some babies with reflux symptoms can have a lactose intolerance even if their bowel movements seem fine...like my son's. Anybody have similar experience with Zantac/reflux? We started Omeprazole today and will see how that goes.