Supplement stacks / Hydrochlorothiazide + Magnesium

Can You Take Hydrochlorothiazide with Magnesium?

Hydrochlorothiazide and Magnesium: one interaction flagged, scored 7/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.

Safety at a glance

Medium risk
Safety score7/10

This score comes from an AI-written analysis of the pair. Our interaction rules check it and can only make it stricter, never milder. Informational only: it can't account for your medications, conditions, or genetics.

What the AI-written analysis says

Hydrochlorothiazide is a thiazide diuretic commonly used to treat high blood pressure and fluid retention, while magnesium is a mineral supplement often taken to support various bodily functions. There is a potential interaction between hydrochlorothiazide and magnesium, as thiazide diuretics can lead to electrolyte imbalances, including magnesium depletion. Therefore, while magnesium supplementation may help mitigate this effect, it is essential to monitor magnesium levels and consult a healthcare provider before combining these substances.

Hydrochlorothiazide is a prescription medication. This page describes publicly documented interactions — it can't see your dose, your other prescriptions, or your labs. Discuss any supplement with the prescriber or pharmacist who manages this medication before combining.

Known interactions

Hydrochlorothiazide × Magnesium
medium risk

Hydrochlorothiazide may cause magnesium depletion, and while magnesium supplementation can help, it is crucial to monitor magnesium levels to avoid potential hypermagnesemia, especially in individuals with kidney issues.

Hydrochlorothiazide

From the AI-written analysis.

Generally well-tolerated but can lead to electrolyte imbalances, including low potassium and magnesium levels.

Typical dosage: As prescribed or as directed on the label

Common side effects:
  • Dizziness
  • Increased urination
  • Low potassium
  • Low magnesium
Warnings:
  • Monitor electrolyte levels regularly; consult healthcare provider if experiencing symptoms of electrolyte imbalance.

Magnesium

From the AI-written analysis.

Generally safe when taken within recommended dosages; caution in individuals with kidney disease.

Typical dosage: 200-400 mg daily.

Common side effects:
  • Diarrhea
  • Nausea
  • Abdominal cramping
Warnings:
  • Avoid high doses if you have kidney disease; consult healthcare provider before starting supplementation.

Timing

Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.

Watch out for

  • Consult your healthcare provider before starting magnesium supplementation while on hydrochlorothiazide to monitor for potential electrolyte imbalances.

Frequently asked questions

Can you take Hydrochlorothiazide and Magnesium together?

Hydrochlorothiazide and Magnesium: one interaction flagged, scored 7/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.

What score does the Hydrochlorothiazide and Magnesium combination get?

The Hydrochlorothiazide and Magnesium combination is scored 7/10 (medium risk). The score comes from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice. Always confirm with a healthcare professional.

When should you take Hydrochlorothiazide and Magnesium?

Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.

What should you watch out for when combining Hydrochlorothiazide and Magnesium?

Consult your healthcare provider before starting magnesium supplementation while on hydrochlorothiazide to monitor for potential electrolyte imbalances.

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What your DNA adds

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AI-written analysis generated August 28, 2026, checked by our interaction rules · How our analysis works