Can I take Evening primrose oil and Iron supplements together?
Drug interaction guide
Originally published 12 May 2026
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Taking evening primrose oil and iron supplements at the same time may reduce how much iron your body absorbs. This could make the iron supplement less effective at treating or preventing iron deficiency.
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Why this happens
Evening primrose oil contains certain plant compounds (phenolics) that can bind to iron in the digestive tract. This creates a complex that is difficult for the body to absorb into the bloodstream.
What you should do
Back to contentsTo ensure you get the full benefit of your iron supplement, it is best to separate the doses. Take your iron supplement at least 2 hours before or 2 hours after taking evening primrose oil.
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Using other medicines
Back to contentsTaking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
12 May 2026 | Originally published
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