Can I take Evening primrose oil and Melatonin together?

Why this happens

Both substances can have a calming effect on the central nervous system. Evening primrose oil contains gamma-linolenic acid (GLA), which may affect how the brain handles signals. Melatonin is a hormone that regulates sleep. When used together, their sedative effects may add up (an additive effect). Additionally, some evidence suggests evening primrose oil might lower the threshold for seizures, though this is mainly a concern for people with epilepsy or those taking other medications that also lower this threshold.

For most healthy people, taking these together is likely fine, but you should be aware that you might feel more tired than usual the next morning. If you have a history of epilepsy or seizures, or if you are taking medication for schizophrenia (like phenothiazines), you should speak to your doctor or pharmacist before combining these two supplements. Avoid driving or using heavy machinery until you know how the combination affects you.

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.