Saigenzai | Narutopedia | Fandom

Saigenzai (催幻剤, literally meaning: Hypnotic Illusionary Medicine) is a type of drug that produces genjutsu, mentioned in Naruto Jinraiden: The Day the Wolf Howled. Because the genjutsu is administered through a drug, it does not rely on a user to keep it in effect and it's able to have a lasting impact on the target.