It is intended to provide a remedy for diseases caused by macrophages with dysfunction or mediated by macrophages. Namely, a remedy which activates the phagocytic capacity of macrophages and thus is efficiently incorporated into the macrophages due to the vigorous phagocytosis. As a result, the macrophages with dysfunction are normalized, macrophages infected with a pathogen are exterminated or a pathogen in the infected macrophages is exterminated.