The present disclosure relates to a stable orodispersible film formulation containing montelukast as an active pharmaceutical ingredient or other various active pharmaceutical ingredients in which decomposition of these active ingredients is reduced, resulting in low impurity content during storage.本發明係關於一種穩定的口內崩散型膜調配物,其含有作為活性醫藥成分的孟魯司特(montelukast)或其他各種活性醫藥成分,其中此等活性成分之分解減少,從而使得儲存期間產生的雜質含量較低。