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
Twelve week courses; effects build slowly and are not immediate.
Who it's actually for
People working on memory and learning, with patience.
Safe upper limit
UnverifiedNo formal limit; 300 mg extract daily in trials
Digestive upset is common. It also has a mild thyroid-stimulating effect.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Thyroid medication — Levothyroxine, carbimazole, methimazole
- Sedatives / sleep medication — Benzodiazepines, zopiclone, zolpidem, opioids
- Antidepressants — SSRIs, SNRIs, MAOIs, tricyclics
Other supplements:
Run your full list through the interaction check.
Practical notes
- Take with food to reduce stomach upset.
- Mildly sedating for some people.