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Can I take Evening primrose oil and Rosehip together?

Drug interaction guide

Both evening primrose oil and rosehip have properties that can thin the blood. Taking them together might slightly increase the risk of bruising or bleeding, although this is generally unlikely to be a problem for most healthy people.

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Why this happens

Evening primrose oil contains gamma-linolenic acid (GLA), which can slow blood clotting. Rosehip is rich in Vitamin C and other compounds that may also have mild anti-clotting effects. When used together, these effects could theoretically add up.

It is generally fine to take these together, but you should use caution if you are already taking blood-thinning medications (like warfarin or aspirin) or if you have a scheduled surgery. If you notice unusual bruising, nosebleeds, or bleeding gums, stop taking them and speak to your doctor.

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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 supplements can thin the blood and increase the risk of bruising or bleeding. You must stop taking them at least 2 weeks before any scheduled surgery.

Alcohol

It is best to avoid or strictly limit alcohol when taking evening primrose oil. While there is no direct chemical interaction, both substances can lower the seizure threshold in susceptible individuals, and alcohol may worsen the side effects of the supplement, such as nausea or indigestion.

It is best to avoid or strictly limit alcohol when taking rosehip supplements. While there is no direct interaction, both alcohol and high doses of rosehip can put strain on the liver or kidneys in certain individuals, and alcohol may worsen the inflammatory conditions rosehip is often used to treat.

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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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Article history

The information on this page is written and peer reviewed by qualified clinicians.

  • 25 Jan 2026 | Originally published
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