M.L.
My son has acid reflux and was given Prevacid since 3 weeks old. It helps. He is almost 2 and still takes it. My son was also allergic to milk and soy protein. Do you think your daughter may have any allergies? He was gassy and very uncomfortable.
He sees Dr Hernandez (ped Gastro Dr) and he is wonderful and loves kids.
Good Luck.