The present invention addresses the problem of providing a novel application of meglumine or a salt thereof. The present invention is an antiseptic agent containing meglumine or a salt thereof, and a pharmaceutical composition containing the antiseptic agent according to the present invention, and pertaining to: a pharmaceutical composition which does not contain benzalkonium chloride and which is placed in a reusable container； a product that comprises the pharmaceutical composition containing the antiseptic agent according to the present invention and a reusable container； and a method of improving the antiseptic effect of the pharmaceutical composition by including meglumine or a salt thereof in the pharmaceutical composition that has been placed in the reusable container.
