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
Weeks to a few months. This is not one to take indefinitely at high doses.
Who it's actually for
Specific uses in pregnancy nausea and some medication-induced deficiencies.
Safe upper limit
Unverified100 mg per day (many European bodies set it far lower, near 12–25 mg)
Sustained high intake causes peripheral neuropathy — numbness and tingling that can persist after stopping.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Parkinson's medication — Levodopa / carbidopa
- Anti-seizure medication — Phenytoin, valproate, carbamazepine, lamotrigine
Run your full list through the interaction check.
Practical notes
- Check your B-complex and energy drinks; B6 stacks silently across products.
- Any new numbness or tingling means stop and see a doctor.