Hi Georgann,
My daughter was on Zantac, an H2 Blocker similar to Pepcid, and she did well the first week. Then we upped her dose and she did well again for a week. Then is was downhill for months. She just never got long lasting relief from Zantac.
Yes, babies can develop a tolerance to H2 Blockers in only a week’s time. (I read about this at marci-kids.com, and experienced with my own child).
My son also has reflux and I knew to not try Zantac again. I asked for a PPI and his doctor put him on Prevacid. Once we got his dose right he turned around and has been fine since.
Does Jadon have reflux? Do you have feeding difficulties with him? How is his sleep?
Here’s a link where you can read about medications for reflux including PPI’s like Prevacid and Zegerid.
http://www.marci-kids.com/
I hope things improve. I sure know how hard it is.
Christine