抗こうヒスタミン薬やくじ字FuriganaMeanings1nounantihistamineMedical term for a drug that blocks histamine receptors, used to treat allergies.花か粉ふん症しょうには抗こうヒスタミン薬やくがよく処しょ方ほうされる。Antihistamines are often prescribed for hay fever.