medicated oils are preparations in which oil is boiled with prescribed decoctions and pastes of drugs according to the prescribed procedure. this process ensures absorption of the active therapeutic properties of the ingredients used. mostly oil soluble frations of these ingredient are collected through this process. some fine particles of these ingredients remain suspended in the medicated oil even after filteration and the theraeutic properties of these insoluble fractions are also available for use through these medicated oils. according to ayurveda, oil has the specific property to absorb the therapeutically useful fractions of drugs.