Can You Take Atorvastatin and St. John's Wort Together?
NCCIH names "certain statins, including simvastatin" among the medications St. John's Wort can weaken -- atorvastatin is a statin, though it is not named individually.
See the full Atorvastatin page and St. John's Wort page for other reviewed interactions and reference information.
What the interaction means
NCCIH's St. John's Wort page states St. John's Wort can weaken "certain statins, including simvastatin" -- a class-level statement, not a full list of every statin. Atorvastatin's own FDA label does not name St. John's Wort, but it does document that rifampin (a well-established CYP3A4 inducer) reduces atorvastatin's plasma levels, confirming atorvastatin's own concentration is sensitive to CYP3A4 induction -- the same general mechanism class St. John's Wort is known to act through.
Why it may happen
St. John's Wort is a well-documented inducer of the CYP3A4 enzyme and P-glycoprotein transporter. Atorvastatin is metabolized through CYP3A4, and its own label separately confirms sensitivity to CYP3A4 induction (via the rifampin interaction). Neither source states this exact mechanism for the atorvastatin+St. John's Wort pair specifically -- this is a reasonable inference bridging two independently-documented facts, not a claim either source makes directly about this pair.
Practical context
This is a class-level finding (simvastatin named as the example, not atorvastatin), reinforced but not directly confirmed by atorvastatin's own demonstrated CYP3A4 sensitivity. Anyone taking atorvastatin who is considering St. John's Wort should discuss it with their prescriber -- a real interaction (reduced statin effectiveness) is plausible but not directly documented for this specific pair the way it is for simvastatin.
What the sources say
Last reviewed 2026-08-25
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.
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