Is Duloxetine safe with St John's Wort?
No — not without a prescriber's sign-off. Duloxetine and St John's Wort are flagged "Avoid" in DoseRoutine because st John's Wort has serotonergic activity and induces CYP3A4, altering SSRI levels.
The short version
- Verdict
- Not together — this combination should be avoided.
- Timing
- Separating the doses does not solve this one. The concern is the combined effect in the body, not absorption timing, so spacing them out is not a workaround.
- What to do
- Avoid combining.
People also ask
Is Duloxetine safe with St John's Wort?
No — not without a prescriber's sign-off. Duloxetine and St John's Wort are flagged "Avoid" in DoseRoutine because st John's Wort has serotonergic activity and induces CYP3A4, altering SSRI levels.
Can you take Duloxetine and St John's Wort at the same time of day?
Separating the doses does not solve this one. The concern is the combined effect in the body, not absorption timing, so spacing them out is not a workaround.
What does DoseRoutine rate the Duloxetine and St John's Wort combination?
Not together — this combination should be avoided. Duloxetine and St John's Wort should not be taken together without medical supervision.
What should someone taking Duloxetine and St John's Wort do?
Avoid combining. This is educational information, not medical advice — a prescriber who knows the full routine is the one to confirm it.
Before you combine anything
Counterfeit and mis-dosed product is a bigger risk than most pairwise interactions. How to protect yourself when buying and using compounds covers what to check first.
Related questions
DoseRoutine is educational and does not diagnose, prescribe, or recommend a dose. Nothing here replaces advice from a prescriber who knows your full routine.