My one year old baby boy has not remained silent reflux after taking Prevacid for 4 months. The GI is not as helpful, always always says we should continue with it. Is there a way to know what is happening inside my baby’s digestive system? We had already done a barium swallow and it was then the Prevacid has started. Are there other “ultrasound, as the tests that can tell us if the Prevacid has ever helped?