A possible (probable?) symptom of the use of acid blockers is either SIBO (small intestinal bacterial overgrowth) or SIFO (small intestinal fungal overgrowth) or a mixed infection of the small intestine.
The defenses of the small bowel against microbial overgrowth are clearly not what the stomach has, given a diet that is pleasing to the taste buds (including of course sufficient fat). The stomach is where high level germ killing must occur and acid production is an important part of that and is the ingestion of sufficient fat, defined as enough to please the well-nourished palate..
Given the weaker defenses of the small bowel against bacteria and fungi, how long does it take the small bowel to recover after acid blockers have been stopped?