Oil obtained by cold pressing seeds.
Indications approved by the European Medicine Agency (EMA) for traditional uses: Symptomatic itching relief in chronic or acute skin dryness conditions. The WHO approves its use for the symptomatic treatment of atopic eczema, diabetic neuropathy, rheumatoid arthritis and premenstrual syndrome. Evening primrose oil, as a source of linolenic acid, is preventive in that it heals to prevent the occurrence of premenstrual symptoms (irritability, depression, bloating, acne, tender breasts, headaches, etc.), in cases of dermatitis of allergic origin (atopic eczema), joint pain (rheumatoid arthritis) and high blood pressure.
Evening primrose oil is an antiplatelet agent (inhibits platelet aggregation) and is an anti-inflammatory and antioxidant. It is attributed to having a regulatory role in general metabolism, and is directly or indirectly involved in many physiological processes.
Leaves and roots. Often its aerial parts are sold; aerial parts and roots are mixed, inflorescence free.