The present invention relates to a pharmaceutical composition, a veterinary composition, and an antigen-charging additive comprising gefitinib or a pharmaceutically acceptable salt thereof for preventing and treating toxoplasma gondii infection. The composition of the present invention is safe for people and animals without toxicity or side effects, and can be widely used in the pharmaceutical and veterinary fields by having an excellent killing effect on the toxoplasma gondii.본 발명은 제피티닙(gefitinib) 또는 이의 약학적으로 허용되는 염을 포함하는 톡소포자충 감염증 예방 및 치료용 약학 조성물, 수의학적 조성물 및 항원충보조제에 관한 것이다.
