She was also diagnosed with Motility disorder( her digestive tract does not function at the proper
speed) and takes a drug called Domperidone
for that. Does your daughter refuse to eat breakfast or wants it hours after getting up? That is common with people with reflux problems. Definately watch how late at night she eats. If pediasure is what she wants right now, let her drink that. If you don't find the Zantac is working, go back. Has she had an upper GI to confirm Gerd?