So sorry you are going through such a tough time. It seems it is always something with these little refluxers.
Just wondering, how were you giving the Zegerid to him? What worked great for us (and I wonder if it makes it a little easier on their little tummy) is to give it with 1 oz of formula rather than directly into their mouth. It has worked great for Abby.
As Brandy wondered, I also; wonder if perhaps it is a bug of some kind. Hope you can figure it out soon. One thing that I did learn is that you are not to mix Zegerid in with Pedialite as Pedialite apparently has acid which breaks it down. That is what Joel at Marci-kids told me when Abby was sick one time.
Hope things get better soon for you guys!!
Robin