A stabilized aqueous (6S)-folinic acid preparation for injection

摘要

The present invention provides a stabilized aqueous preparation for injection containing 5-formyl-(6S)-tetrahydrofolic acid or a pharmacologically acceptable salt thereof as an active ingredient and a method of stabilizing 5-formyl-(6S)-tetrahydrofolic acid or a pharmacologically acceptable salt thereof. An aqueous preparation containing 5-formyl-(6S)-tetrahydrofolic acid or a pharmacologically acceptable salt thereof shows extremely excellent preservation stability in the presence of a pH regulator and an antioxidant.