[Evaluation of the liberation of aluminum and magnesium ions from preparations made up of antacid ].

Releasing of Al3+, Mg2+ and Ca2+ cations from 24 antacid mixtures, 15 from which were prepared in our Department and 9 of foreign origin, during the neutralization reaction of HC10,1 mol/dm3 was determined. Duration of action at pH 3-5 and acid consuming capacity of HCl 1 mol/dm3 acc. to USP XX was also performed. It was stated that magnesium cations were first than Al3+ released from the antacid mixtures during the neutralization reaction.