Can I take St john's wort and Fluoxetine together?
Drug interaction guide
Originally published 24 Jan 2026
Erfüllt die Anforderungen des Patienten redaktionelle Richtlinien
- HerunterladenHerunterladen
- Teilen Sie
- Sprache
- Diskussion
Taking St John's Wort with fluoxetine can lead to a very serious and potentially life-threatening condition called 'serotonin syndrome'. This happens when there is too much of a chemical called serotonin in your brain. Symptoms can include feeling very agitated, confused, or shaky. You might also experience sweating, a fast heartbeat, muscle twitches, shivering, or diarrhoea. In severe cases, it can lead to fits (seizures) or loss of consciousness.
In diesem Artikel:
Lesen Sie unten weiter
Why this happens
Both fluoxetine and St John's Wort work by increasing the levels of serotonin in the brain. When used together, they can raise these levels too high (a 'pharmacodynamic' interaction). Additionally, St John's Wort can change how the liver breaks down certain medicines, which can make the levels of fluoxetine in your blood unpredictable.
What you should do
Do NOT take St John's Wort if you are already taking fluoxetine (Prozac). If you are currently taking both, you should contact your GP or pharmacist immediately for advice before stopping either, as stopping antidepressants suddenly can also cause side effects. If you experience severe symptoms like confusion, high fever, or tremors, seek emergency medical help.
Lesen Sie unten weiter
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.
Haftungsausschluss
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.
Patient picks for Drug interactions

Behandlung und Medikamente
Can I take Amytriptaline and Atorvastatin together?
There is no significant interaction between amitriptyline and atorvastatin. These two medicines work in different ways and are generally safe to take together.

Behandlung und Medikamente
Can I take Aspirin and Atorvastatin together?
There is no harmful interaction between aspirin and atorvastatin. In fact, these two medicines are very commonly prescribed together by doctors to help prevent heart attacks and strokes.
Lesen Sie unten weiter
Artikel Geschichte
Die Informationen auf dieser Seite wurden von qualifizierten Klinikern verfasst und von Fachleuten geprüft.
24 Jan 2026 | Ursprünglich veröffentlicht

Fragen, teilen, verbinden.
Stöbern Sie in Diskussionen, stellen Sie Fragen, und tauschen Sie Erfahrungen zu Hunderten von Gesundheitsthemen aus.

Fühlen Sie sich unwohl?
Beurteilen Sie Ihre Symptome online und kostenlos
Melden Sie sich für den Patienten-Newsletter an
Ihre wöchentliche Dosis klarer, vertrauenswürdiger Gesundheitsratschläge – geschrieben, damit Sie sich informiert, sicher und unter Kontrolle fühlen.
Mit Ihrer Anmeldung akzeptieren Sie unsere Datenschutzerklärung. Sie können sich jederzeit abmelden. Wir verkaufen Ihre Daten niemals weiter.