Can I take Evening primrose oil and Ginger together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
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Taking evening primrose oil and ginger together may increase your risk of bruising or bleeding. This is because both supplements can slow down the time it takes for your blood to clot.
Why this happens
Both evening primrose oil and ginger have 'antiplatelet' effects. This means they make the small cells in your blood (platelets) less sticky, which prevents them from clumping together to form clots. When used together, this effect is strengthened (additive effect).
What you should do
Use this combination with caution. If you notice unusual bruising, nosebleeds, or bleeding gums, stop taking them and speak to your doctor. You should stop taking both supplements at least two weeks before any planned surgery or dental work. If you are already taking prescribed blood-thinning medications (like warfarin or aspirin), do not take these supplements without medical advice.
Important precautions
Epilepsy or Schizophrenia
Evening primrose oil may increase the risk of seizures, particularly in people with a history of epilepsy or those taking phenothiazine medications for schizophrenia.
Bleeding disorders or upcoming surgery
Both evening primrose oil and ginger can thin the blood and increase the risk of bruising or bleeding. You must stop taking them at least two weeks before any scheduled surgery.
Food and drink warnings
Alcohol
It is best to avoid or strictly limit alcohol when taking these supplements. Combining alcohol with evening primrose oil or ginger may increase the risk of stomach irritation or affect how your body processes the supplements. Additionally, alcohol can thin the blood, which may compound the blood-thinning effects of these supplements.
Foods with natural anticoagulant properties (e.g. Garlic, Turmeric)
Both evening primrose oil and ginger have natural blood-thinning (anticoagulant) properties. Consuming very large amounts of other foods that also thin the blood, such as garlic or turmeric, alongside these supplements may further increase your risk of bruising or bleeding.
Using other medicines
Taking 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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