PROBLEM TO BE SOLVED: To provide an information processing device which is capable of determining an appropriate dosage with psychological effects being eliminated.SOLUTION: The information processing device determines a prescription pattern in which dosages of drugs per dose are randomly varied according to a dosage volume change pattern. As an example, it would be possible to apply the present technology to an information processing device, etc., which determines a dosage when a doctor prescribes a drug to a patient.SELECTED DRAWING: Figure 1【課題】心理的影響を排除した適切な薬量を決定することができる情報処理装置を提供する。【解決手段】情報処理装置が、薬量の容量変化パターンに応じて、服用単位の薬量をランダムに変動させた処方パターンを決定する。例えば、医者が患者に薬を処方する際の薬量を決定する情報処理装置等に適用できる。【選択図】図1