General Dosage
1-4g evening primrose oil daily, providing approximately 80-360mg of GLA
Maximum dose: 6g daily has been used in some studies; 3-4g is the standard therapeutic range
Evening Primrose Oil Dosage Guide
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Dosage Recommendations
General recommendation: 1-4g evening primrose oil daily, providing approximately 80-360mg of GLA
Timing: Split into 2-3 doses with meals throughout the day for optimal GLA absorption • Take with food for best absorption.
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Cyclical mastalgia | 3-4g EPO daily for 3-6 months | Moderate |
| PMS symptoms | 1.5-3g EPO daily | Emerging |
| Skin health / atopic dermatitis | 2-4g EPO daily | Emerging |
Upper limit: 6g daily has been used in some studies; 3-4g is the standard therapeutic range
Timing & Absorption
Split into 2-3 doses with meals throughout the day for optimal GLA absorption
Best taken with food for optimal absorption.
References
- Pruthi S, Wahner-Roedler DL, Torkelson CJ, et al. (2010). Vitamin E and evening primrose oil for management of cyclical mastalgia: a randomized pilot study. Alternative Medicine Review. PubMed
- Budeiri D, Li Wan Po A, Dornan JC (1996). Is evening primrose oil of value in the treatment of premenstrual syndrome?. Controlled Clinical Trials. DOI PubMed