Evening primrose oil has long been used by women to treat hot flashes during menopause.

Evening primrose oil was heavily touted as an effective treatment for eczema

Evening primrose, borage seed, or blackcurrant seed oil provided "moderate" relief of pain and disability in people with rheumatoid arthritis.

Evening primrose oil was first proposed as a possible treatment of diabetic neuropathy

an often debilitating nerve pain mainly affecting the feet and legs.

Evening Primrose Oil is a herbal medicine. Its seeds contain high amount of omega-6 essential fatty acids (EFAs), which have an indirect effect on different glands. This helps to regulate hormones during monthly period and breast feeding. It also helps in reducing pain in the breast.

Major & minor side effects for Evening primrose oil

• upset stomach
• nausea
• diarrhea
• headache

Taking evening primrose oil in limited quantity is safe for pregnant and breastfeeding women. 

It is also safe when applied to the skin.

It should not be taken by patients who have bleeding disorder for increased chance of bruising and bleeding.

There is a concern that taking evening primrose might make seizures more likely in some people.

It should not be used by Schizophrenic patients.

Evening primrose might increase the chance of bleeding during or after surgery.