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Fatty acid

Evening primrose oil

Evening primrose oil is pressed from the seeds of evening primrose (Oenothera biennis). It contains omega-6 fats, including gamma-linolenic acid (GLA).

Also listed as Evening Primrose, Evening Primrose Extract, Evening Primrose Powder

Hair & SkinWomen's HormonesStress & MoodCardiovascularMen's Hormones

What can go wrong?

Digestive symptoms such as nausea, abdominal discomfort and diarrhea are the most common problems. NCCIH recommends discussing use with a healthcare professional when medicines are involved. 1

Cochrane also flags possible increased bleeding with warfarin and notes that the eczema trials did not establish long-term safety. 2

Pregnancy is a separate question

Studies of using the oil to start labor have inconsistent results, and long-term safety for that use has not been established. Pregnancy and breastfeeding safety evidence is not conclusive. 1

For information, not individual medical advice. Ingredient studies do not establish the effectiveness of these products.

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