A composition comprises at least one 6-hydroxy-4H-benzo[1,4]oxazin-3-one derivative and at least one other active substance. A composition comprises at least one 6-hydroxy-4H-benzo[1,4]oxazin-3-one compounds of formula (I) and at least one other active substance. n : 1 or 2； R 1 and R 2 : H, halo, 1-4C alkyl or -O-1-4C alkyl；and R 3 : 1-4C alkyl, OH, halo, -O-1-4C alkyl, -O-1-4C alkylene-COOH or -O-1-4C alkylene-CO-O-1-4C alkyl. [Image] ACTIVITY : Antiinflammatory； Respiratory-Gen.； Antiasthmatic； Dermatological； Immunosuppressive； Antiallergic； Cardiant； Vasotropic. MECHANISM OF ACTION : None given.
