Lowers the secretion of hydrochloric acid in the stomach, as an inhibitor of “proton pump”(process of the exchanging of hydrogen ions). The mechanism of antisecretory action associated with inhibition (suppression of) the enzyme H-K-ATPase (an enzyme that accelerates the exchange of hydrogen ions) in the cell membranes of the gastric mucosa, which leads to blocking of the final stage of formation of hydrochloric acid.