For example, battery acid has a pH of 0, which means it’s a very strong acid. The least acidic fluids are at 14. ... Stomach acid’s low pH level is largely due to hydrochloric acid (HCl).

Hydrochloric acid supplements and enzymes. Your doctor may prescribe supplements such as betaine hydrochloride to restore the pH of your stomach. The stomach enzyme pepsin is another common treatment.

RECENT investigations showed that hydrochloric acid enhanced the absorption of ferric iron but had little effect upon the absorption of iron from hemoglobin or ferrous salts. 1–5 Since ferric ...

In some experiments the apparatus was also calibrated against tenth-normal hydrochloric acid (pH 1.1). At 37°C. the response of the apparatus was linear between the limits of pH 1.1 and pH 7.

The hydrochloric acid in the stomach neutralizes alkaline water before the blood absorbs it, Sollid says. The stomach needs this acid and low pH to digest proteins and kill food-borne pathogens ...