NutriStack
Chlorthalidone and Magnesium Citrate, a synergy.
Chlorthalidone can cause magnesium depletion during long-term treatment. Magnesium citrate may help replenish magnesium, particularly when potassium is also low or difficult to normalize. The combination is usually supportive, but magnesium dosing still matters in kidney disease.
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At a glance
- Substances
- Chlorthalidone and Magnesium Citrate
- Pair type
- Synergy
- Evidence (highest tier)
- Moderate
- 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 · Moderate evidence
Synergy
What is happening. Chlorthalidone can cause magnesium depletion during long-term treatment. Magnesium citrate may help replenish magnesium, particularly when potassium is also low or difficult to normalize. The combination is usually supportive, but magnesium dosing still matters in kidney disease.
Mechanism. Chlorthalidone alters distal tubular sodium handling and can increase magnesium loss over time. Supplemental magnesium citrate provides magnesium to counter chronic renal wasting.
Recommendation. If you take chlorthalidone, ask whether magnesium and potassium should be checked periodically. Use magnesium citrate as monitored repletion rather than escalating the dose on your own.
Sources (2)
- Cocco G, Iselin HU, Strozzi C, Cesana B, Baumeler HR. Magnesium depletion in patients on long-term chlorthalidone therapy for essential hypertension. Eur J Clin Pharmacol. 1987;32(4):335-338. PMID 2886340
- 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
Stack Score
How this pair moves the number.
Effect on the composite score
If both Chlorthalidone 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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