Losartan and Magnesium Citrate, a synergy.
Magnesium supplementation lowers blood pressure modestly (about 2-3 mm Hg systolic and 2 mm Hg diastolic) when added to antihypertensive medication. Combined with losartan the effect is additive and generally beneficial, though it may produce mild hypotension if blood pressure is already at goal.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Losartan and Magnesium Citrate
- Pair type
- Synergy
- Evidence (highest tier)
- Strong
- Source citations
- 2 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Synergy · Strong evidence
Synergy
What is happening. Magnesium supplementation lowers blood pressure modestly (about 2-3 mm Hg systolic and 2 mm Hg diastolic) when added to antihypertensive medication. Combined with losartan the effect is additive and generally beneficial, though it may produce mild hypotension if blood pressure is already at goal.
Mechanism. Magnesium modulates vascular smooth muscle calcium handling, promotes nitric oxide release, and inhibits angiotensin-induced vasoconstriction. These actions complement AT1 receptor blockade.
Recommendation. Magnesium Citrate 200-350 mg elemental magnesium daily is a reasonable add-on; monitor home blood pressure after starting. Tell your prescriber so your losartan dose can be reviewed. Reduce dose if you develop loose stools.
Sources (2)
- Kass L, Weekes J, Carpenter L. Effect of magnesium supplementation on blood pressure: a meta-analysis. Eur J Clin Nutr. 2012;66(4):411-8. PMID 22318649
- Alharran AM, et al. Impact of Magnesium Supplementation on Blood Pressure: An Umbrella Meta-Analysis of Randomized Controlled Trials. Curr Ther Res Clin Exp. 2024;101:100755. PMID 39280209
Stack Score
How this pair moves the number.
Effect on the composite score
If both Losartan and Magnesium Citrate are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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