PURPOSE: A composition containing Ojeok-san extract is provided to enhance immunity and to prevent or treat diseases caused by immunity reduction. CONSTITUTION: A composition for enhancing immunity contains Ojeok-san extract as an active ingredient. Ojeok-san includes Atractylodis rhizoma, Ephedrae herba, Citri unshii Pericarpium, Magnoliae cortex, Platycodi radix, Aurantii fructus immaturus, Angelicae gigantis radix, Zingiberis rhizoma, Paeoniae radix, Hoelen, Angelicae dahuricae radix, Cnidii rhizoma, Pinelliae tuber, Cinnamon bark, Glycyrrhizae radix et rhizoma, Zingiberis rhizoma crudus, and Allii radix. The extract is prepared using water, C1-C4 alcohol, or mixture solvent thereof. A pharmaceutical composition for preventing or treating diseases caused by immunity reduction contains the composition as an active ingredient, containing the extract.본 발명은 오적산 추출물을 유효성분으로 함유하는 면역 증강용 조성물, 이를 함유하는 면역 증강용 식품 조성물 및 면역기능 저하로 인한 질환의 예방 또는 치료용 조성물에 관한 것이다.
