In short: St. John's wort can interact with antidepressants, blood thinners, contraceptives and many other medicines. Ask a pharmacist before using it.
Why It Interacts
St. John's wort can speed up the liver enzymes that clear many medicines, which can make them less effective. It can also add to serotonin effects of antidepressants.
Medicines Of Concern
Antidepressants, warfarin and other blood thinners, hormonal contraceptives, some heart, cancer, transplant and HIV medicines, among others.
Other Effects
It may increase sun sensitivity and can cause stomach upset, dizziness or tiredness in some people.
What To Do
Bring your full medicine list to a pharmacist before using any product that contains it. Never stop a prescription to take a supplement. See our safety guide.
Key Takeaways
- St. John's wort can interact with antidepressants, blood thinners, contraceptives and many other medicines. Ask a pharmacist before using it.
- Always follow the label and ask a professional if unsure.
- Results vary and no supplement replaces healthy habits.
Learn more on our ingredients page or read the honest review.
Want today's Olicept® pricing and guarantee terms?
Visit the Official Checkout →