Levetiracetam + St. Johns Wort

SAFE — No Known Interaction

🟢 SAFE — St. Johns Wort and Levetiracetam can be taken together safely.

Evidence level: LIMITED

What this interaction means

St. Johns Wort and Levetiracetam are generally considered safe to use together. No adverse interactions have been reported in medical literature.

How it works (mechanism)

No clinically significant interaction between St. Johns Wort and Levetiracetam has been identified in medical literature.

Practical advice

No interaction documented between St. Johns Wort and Levetiracetam. Always inform your healthcare provider about everything you take.

Timing

Take Levetiracetam at exact consistent times — seizure control depends on stable blood levels. St. Johns Wort can be taken at a separate meal. Some botanicals (evening primrose, borage) may lower seizure threshold. St. John's Wort can dramatically reduce antiepileptic levels via CYP enzyme induction.

Risk factors

Higher risk for: those on multiple antiepileptics (enzyme induction/inhibition), liver impairment, elderly, pregnant individuals (teratogenicity concerns), or those with recent dose changes.

Symptoms to watch for

Monitor seizure control and medication side effects when combining St. Johns Wort with Levetiracetam. Watch for: increased seizure frequency, unusual drowsiness, dizziness, coordination problems, blurred or double vision, tremors, difficulty concentrating, or mood changes. Drug interactions can raise or lower antiepileptic blood levels. When to seek emergency help: Seizure lasting more than 5 minutes, clusters of seizures, difficulty breathing after a seizure, severe rash (especially with fever or blisters), severe dizziness or fainting, or signs of liver problems (yellowing skin, dark urine, severe nausea).

What to tell your doctor

No urgent discussion needed, but keep your provider informed. Say: "I take St. Johns Wort alongside Levetiracetam — anything I should know?"

Safer alternatives

Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.

Frequently asked questions

Can I take Levetiracetam and St. Johns Wort together?

St. Johns Wort and Levetiracetam are generally considered safe to use together. No adverse interactions have been reported in medical literature.

When should I take Levetiracetam vs St. Johns Wort?

Take Levetiracetam at exact consistent times — seizure control depends on stable blood levels. St. Johns Wort can be taken at a separate meal. Some botanicals (evening primrose, borage) may lower seizure threshold. St. John's Wort can dramatically reduce antiepileptic levels via CYP enzyme induction.

What symptoms should I watch for if I combine Levetiracetam and St. Johns Wort?

Monitor seizure control and medication side effects when combining St. Johns Wort with Levetiracetam. Watch for: increased seizure frequency, unusual drowsiness, dizziness, coordination problems, blurred or double vision, tremors, difficulty concentrating, or mood changes. Drug interactions can raise or lower antiepileptic blood levels. When to seek emergency help: Seizure lasting more than 5 minutes, clusters of seizures, difficulty breathing after a seizure, severe rash (especially with fever or blisters), severe dizziness or fainting, or signs of liver problems (yellowing skin, dark urine, severe nausea).

Are there safer alternatives to combining Levetiracetam with St. Johns Wort?

Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.

What should I tell my doctor about taking Levetiracetam and St. Johns Wort?

No urgent discussion needed, but keep your provider informed. Say: "I take St. Johns Wort alongside Levetiracetam — anything I should know?"

Explore more interactions

Or browse the full interaction database (121,000+ pairs).