A teaspoon of baking soda in water gives me 45 seconds of relief. I am on Prilosec and attempts to taper off it and introduce famotidine as a replacement ended with me in the hospital overnight.
I consider myself fortunate to have little bouts of indigestion. My sympathy to you for yours.
I hate the few times I have had bad cases of indigestion. So I can just imagine the bad times you’ve dealt with.
Pepcid doesn't work as well as Zantac so I don't know what would have happened if I had to stop PriloSec immediately and go to Pepcid. Zantac has been banned so that's not an option. If you can cut the Prilosec pills in half then maybe transitioning from Prilosec to Pepcid over a few days might work.