劇げき剤ざいげきざいじ字FuriganaMeanings1nounpowerful medicine; violent poisonRefers to a drug or substance with extremely strong, often dangerous effects. Can be used for potent pharmaceuticals or toxic substances.この劇げき剤ざいは医い師しの指し示じなしに使し用ようしてはいけない。This powerful medicine must not be used without a doctor's instructions.