THat's a good question, and one I had alot, when I was on aciphex. If you read alot of alternative medicine info, they usually have you convinced that you don't have enough acid. I was never sure who to believe. But.....these couple of things sort of told me that I was on the right track, taking aciphex..............
I felt even worse when I would take something acidic; I felt better (even slightly) when I would take the aciphex; I would have alot less nausea and bloating on the aciphex.
The problem with being on a PPI, and wanting to figure out if you have too little, is that when you try to come off the PPI, you might have a week or so of rebound acid production, which might hurt, and you assume that you need the PPI.......but if you can get through that first week, then I think you will be starting more "with a clean slate"....to know where you stand with your stomach acid.
Sometimes, it isn't real obvious if you have too little or too much, and you just have to look for little signs.
I took a Betaine pill once, and it felt awful. I'm assuming that if I had too little acid, I would have felt better. It's hard to know for sure!
What makes matters worse is that altnerative med docs might go too far in the "too little acid" direction, and conventional docs don't budge from their "only old people have too little acid" position. According to most conventional docs, it's extremely unlikely for all but old people, to have too little acid.