> since pills reducing histamine I would assume the author was talking about H2 receptor antagonists. Those H2 antihistamines reduce stomach acid production. J

> since pills reducing histamine I would assume the author was talking about H2 receptor antagonists. Those H2 antihistamines reduce stomach acid production. Just like the proton pump inhibitors he was taking before ("stomach acid pills stopped working"). Both are rather insidious as tolerance and SEVERE rebound can develop, especially with the PPI. Many people taking PPI for a month have a very hard time ever getting off of them. Besides that, PPI are just plain dangerous and cause "fatal cardiovascular disease, stomach cancer and chronic kidney disease": https://www1.racgp.org.au/newsgp/clinical/cause-of-ppi-deaths-revealed https://www1.racgp.org.au/newsgp/clinical/cause-of-ppi-death... I don't understand why the author is surprised that Boswellia helped their digestion though -Boswellia is very well known and proven to aid inflammatory diseases, especially inflammatory bowel diseases.