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What are the risks of taking evening primrose oil?

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Most people can use evening primrose oil without complications. But keep in mind that there have been reports of side effects such as:

Evening primrose oil may raise the risk of bleeding among people who take anticoagulant and antiplatelet medications. It may also raise the risk of seizures as well as serious nausea and vomiting for people taking a class of drugs known as phenothiazines. These drugs are used to treat schizophrenia and other psychotic disorders.

  • Headache
  • Stomach upset
  • Nausea
  • Dizziness
  • Rash

From: Evening Primrose Oil WebMD Medical Reference

SOURCES:

Natural Standard: "Evening Primrose Oil (Oenothera biennis L.)"

Georgetown University Medical Center: "Evening Primrose."

National Center for Complementary and Alternative Medicine: "Evening Primrose Oil."

Memorial Sloan-Kettering Cancer Center: "Evening Primrose Oil."

Natural Medicines Comprehensive Database: "Evening Primrose Oil."

Fan, Y-Y. , September 1998. The Journal of Nutrition

Mayo Clinic: "Evening Primrose."

Reviewed by Melinda Ratini on May 22, 2019

SOURCES:

Natural Standard: "Evening Primrose Oil (Oenothera biennis L.)"

Georgetown University Medical Center: "Evening Primrose."

National Center for Complementary and Alternative Medicine: "Evening Primrose Oil."

Memorial Sloan-Kettering Cancer Center: "Evening Primrose Oil."

Natural Medicines Comprehensive Database: "Evening Primrose Oil."

Fan, Y-Y. , September 1998. The Journal of Nutrition

Mayo Clinic: "Evening Primrose."

Reviewed by Melinda Ratini on May 22, 2019

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What are some precautions for taking evening primrose oil?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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