Rhodiola has a more stimulating effect at lower amounts, and a more sedating effect at higher amounts. In medical treatment, the usual amounts taken are 200 to 600 mg per day of a standardized extract to at least 3% rosavins and 0.8 to 1% salidroside.¹⁹ The nonstandardized amount would be 1 gram three times daily of the root, the amount for the alcoholic extract (40% alcohol) is 5 to 40 drops two to three times per day (with a weight to volume ratio of 1:1 to 1:5 ). Rhodiola is usually taken before meals.