This invention provides with a formulation of Edarabone suspension for oral administration having an excellent bioavailability. It is expected that the suspension would reduce a burden required for a patient of ALS and his caregiver.根據本發明,提供一種具有優異之生體可用率之經口投予用依達拉奉懸浮劑,可期待減輕ALS患者或照護者之負擔。