DS2 also has MSPI and has been on Neocate with beechnut cereal since he was 2 days old. He is on Nexium for AR. We tried Nutrimagen at 6 months and he cried all night while on it. So after a week, we put him back on the Neocate and he has done great on it. He done good on baby food and banana puffs. I have tried stage 3 with egg in it and everytime he has thrown it back up.