Is Magnesium Safe with Valsartan?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Inform your doctor before adding magnesium supplements. Self-monitor blood pressure at home and report readings below 90/60 mmHg. Start with low magnesium doses (e.g., 100–200 mg/day) and titrate cautiously.
Why this interaction occurs
Magnesium supplementation independently lowers blood pressure through endothelial relaxation and inhibition of vascular smooth muscle contraction. Combined with Valsartan, the dual antihypertensive mechanism may produce excessive hypotension. Evidence from meta-analyses supports magnesium's modest but real antihypertensive effect.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 76,610 reports mentioning Valsartan. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Valsartan + 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 interactions → · All Valsartan interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.