The below doses are based on scientific research, publications, traditional use, or expert opinion. Many herbs and supplements have not been thoroughly tested, and safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients, even within the same brand. The below doses may not apply to all products. You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.
Adults (18 years and older)
Studies in the treatment of eczema have used doses of 4 to 8 grams of evening primrose oil (EPO) daily, taken by mouth, divided into several smaller doses throughout the day. Studies treating breast pain have used doses of 3 grams EPO daily, taken by mouth, divided into several smaller doses throughout the day.
Children (younger than 18 years)
Studies in children treated for skin conditions have used 3 grams of evening primrose oil daily, taken by mouth, divided into several smaller doses throughout the day. It is reported that the maximum dose should not be greater than 0.5 gram per kilogram of body weight daily. Medical supervision is required.