One of idazokisan and those derivatives and the salt and that racemic body which on its medicine manufacture are allowed, including the optical active isomer and the multiform body, the medicine composition which becomes.イダゾキサン、その誘導体の1つおよびその製薬上許容される塩、そのラセミ体、その光学活性異性体および多形体を含んでなる医薬組成物。