PROBLEM TO BE SOLVED: To provide a medicament capable of ameliorating or preventing the symptom of gastric anisakiasis which is caused by the infection with Anisakis and for the amelioration of which there has been no means except extraction with a bioptome under an endoscope.SOLUTION: The digestive symptom such as acute stomachache (periodic stomachache in squeezing feeling) and vomit is decreased or eliminated by the administration of the medicament for the digestive anisakiasis when fish or shellfish polluted with the Anisakis is eaten in a raw state, and such the digestive symptom is caused by developing the digestive (stomach and intestinal) anisakiasis, because wood creosote inhibits the motility of the Anisakis causing the digestive anisakiasis. When the medicament is previously prophylactically administered, the symptom of the digestive anisakiasis is reduced or prevented even when the fish or the shellfish polluted with the Anisakis is eaten in the raw state.
