Pharmacie Uniprix - Logo
Your shopping list
  Print   Send

Total $0 Tx. Excl.

  Create an account Forgot your password ?

Nom scientifique : Oenothera biennis

Synonyms : fever plant, king’s cure-all, night willow-herb

Part(s) used

Seed oil

Principal constituents

Essential fatty acids (gammalinoleic acid, linoleic acid)

Recognized therapeutic effects

  • Relieves symptoms of premenstrual syndrome
  • Relieves mastalgia
  • Treats auto-immune disorders, particularly multiple sclerosis
  • Treats some skin conditions, such as atopic eczema, acne vulgaris, sores
  • Fights chronic inflammation
  • Fights allergies and bronchial asthma
  • Beneficial in cases of diabetic neuropathy
  • Used to treat attention deficit disorder and hyperactivity in children

Traditional use

  • None


  • Epilepsy and epileptic mania
  • Schizophrenia

Please note: Safety for use during pregnancy has not yet been established

Drug interactions

  • Possible increased incidence of epileptic seizures when taken with anticonvulsants (Lamictal, Topamax, etc.)
  • Increased incidence of epileptic seizures when taken with antipsychotics (Fluanxol, Largactil, Moditen, etc.) used to treat schizophrenia

Please note: In the literature on tests on human subjects, a case is reported of a patient who had taken evening primrose oil and subsequently had an epileptic seizure under anesthesia. The concomitant use of other drugs was also noted, however.

Content produced by Option Consommateurs

Services in pharmacy are the sole responsibility of pharmacist-owners. Only pharmacists are responsible for pharmacy practice. They only provide related services acting under a pharmacist-owner's name.

The Website deals with health-related topics. The information presented has been validated by experts and is accurate at the time of posting. In no way does it replace the opinion of a health care professional. Uniprix Inc. and its affiliated pharmacists accept no liability whatsoever in connection with the information provided on this Website.