maybe you need to raise the dose. I had tried nexium, the powder packets for about 5 days and the beeds didn’t fully dissolve to make a true suspension. Are you using the beeds or the capsules opened up?
Also, it only worked for my dd at almost 40-50 mgs a day!!! Granted my dd is older, she was 8 mo when we tried the nexium. The most luck I’ve had is w/ prevacid, but a high dose-30-40 mg a day!!!!!Now she is doing ok on about 36 a day, meaning her sandifer symptoms have diminished significantly. I woulds just try a higher dose of the nexium and if it works, get your family dr to write the script.