好転反応 こうてんはんのう Meanings Noun healing crisis; cleansing reaction (i.e.: reaction during the elimination of toxins after antibiotic, etc. treatment) Kanji 好 good. Read as コウ. 転 turn. Read as テン. 反 anti-. Read as ハン. 応 respond. Read as ノウ. Jinuma: Japanese Dictionary · Word lists