My youngest child had been in a children's hospital after losing weight during the first six months of her life. She was very hypersensitive to everything and was breastfed and always throwing up (projectile vomiting). At the hospital, doctors found an erosion in her esophagus, the result of all the gastroesophageal reflux. She was sent home with orders to have Maalox before each breastfeeding. It worked! The erosion healed, and she started gaining weight and has been doing fine ever since. Good luck!