Acute gastritis. chronic gastritis. peptic gastric ulcer. peptic duodenal ulcer. Aluminium hydroxide is found in nature as the mineral gibbsite (also known as hydrargillite). It is preferred over other alternatives such as sodium bicarbonate because Al(OH)3, being insoluble, does not increase the pH of stomach above 7 and hence, does not trigger secretion of excess acid by the stomach.
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