Is Magnesium (High Dose) Safe with Vitamin B6 high dose?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Monitor closely for symptoms of peripheral neuropathy (numbness, tingling, gait instability) even when taking magnesium supplementation alongside high-dose B6. Do not exceed 100mg/day of B6 long-term without medical supervision.
Why this interaction occurs
Chronic high-dose Vitamin B6 (>200mg/day) causes sensory peripheral neuropathy through pyridoxine-dependent neurotoxicity. High-dose magnesium may transiently mask neuromuscular symptoms, delaying diagnosis of B6-induced neuropathy and allowing progressive nerve damage.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 2,940,765 reports mentioning Vitamin B6 high dose. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Vitamin B6 high dose + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Magnesium (High Dose) interactions → · All Vitamin B6 high dose interactions →
Already checked this one — check your whole list
Educational only — not medical advice.
Always confirm with your doctor or pharmacist.