NutriStack
Hydrochlorothiazide and Magnesium Citrate, a synergy.
Hydrochlorothiazide can increase renal magnesium excretion during chronic therapy. Magnesium citrate may help replace magnesium if levels fall, and magnesium repletion may also help correct diuretic-related low potassium. Risk is higher in older adults, people with low dietary magnesium intake, and those on long-term diuretic therapy.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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At a glance
- Substances
- Hydrochlorothiazide and Magnesium Citrate
- Pair type
- Synergy
- Evidence (highest tier)
- Moderate
- Source citations
- 3 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Synergy · Moderate evidence
Synergy
What is happening. Hydrochlorothiazide can increase renal magnesium excretion during chronic therapy. Magnesium citrate may help replace magnesium if levels fall, and magnesium repletion may also help correct diuretic-related low potassium. Risk is higher in older adults, people with low dietary magnesium intake, and those on long-term diuretic therapy.
Mechanism. Hydrochlorothiazide inhibits the sodium-chloride cotransporter in the distal convoluted tubule and can impair magnesium conservation over time. Supplemental magnesium citrate provides magnesium to offset chronic renal losses.
Recommendation. Ask for periodic magnesium and potassium checks if you use hydrochlorothiazide long term. Use magnesium citrate as replacement when labs or symptoms support it, and avoid high-dose magnesium if you have kidney disease unless supervised.
Sources (3)
- Sica DA. Diuretic-related side effects: development and treatment. J Clin Hypertens (Greenwich). 2004;6(9):532-540. PMID 15365284
- Mohn ES, Kern HJ, Saltzman E, Mitmesser SH, McKay DL. Evidence of Drug-Nutrient Interactions with Chronic Use of Commonly Prescribed Medications: An Update. Pharmaceutics. 2018;10(1):36. PMID 29558445
- Dai LJ, Ritchie G, Kerstan D, Kang HS, Cole DE, Quamme GA. Magnesium transport in the renal distal convoluted tubule. Physiol Rev. 2001;81(1):51-84. PMID 11152754
Stack Score
How this pair moves the number.
Effect on the composite score
If both Hydrochlorothiazide 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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