I read that calcium citrate can be used to treat acidosis, thus when the blood pH shifts just a bit too much to the left. a) calcium citrate is the salt of citric acid. It doesn't seem to work as an antacid. Why does it work to raise pH in the blood then if it's not a base as such? b) is calcium citrate powder absorbed through the small intestines or the mucous membrane in the mouth into the blood, or would intravenous calcium be needed to treat acidosis? Thanks a lot.