Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
How long to take it
Short courses of two to four weeks.
Who it's actually for
Mild situational anxiety or difficulty settling at night.
Safe upper limit
UnverifiedNo formal limit; commonly taken as tea or 250–500 mg extract
Additive sedation is the main concern, particularly with alcohol or sleep medication.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Sedatives / sleep medication — Benzodiazepines, zopiclone, zolpidem, opioids
- Blood thinners / antiplatelets — Warfarin, apixaban, rivaroxaban, clopidogrel, aspirin
- Blood pressure medication — Beta blockers, calcium channel blockers, ACE inhibitors
Other supplements:
Run your full list through the interaction check.
Practical notes
- Don't combine with alcohol or benzodiazepines.
- Avoid in pregnancy.
- Stop before surgery — it adds to anaesthetic sedation.