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
Courses of twelve weeks or more to judge effect.
Who it's actually for
Age-related cognitive concerns and circulation, with bleeding risk weighed first.
Safe upper limit
UnverifiedNo formal limit; 120–240 mg extract daily in trials
Antiplatelet effect. Cases of spontaneous bleeding, including intracranial, have been reported.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Blood thinners / antiplatelets — Warfarin, apixaban, rivaroxaban, clopidogrel, aspirin
- Anti-seizure medication — Phenytoin, valproate, carbamazepine, lamotrigine
- Antidepressants — SSRIs, SNRIs, MAOIs, tricyclics
- Diabetes medication — Metformin, insulin, gliclazide, SGLT2 inhibitors
Other supplements:
Run your full list through the interaction check.
Practical notes
- Stop two weeks before surgery.
- May lower seizure threshold — avoid with epilepsy.
- Do not stack with other blood-thinning supplements.