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Can I Take Magnesium and Calcium Together? Ideal Ratio Guide

Magnesium and calcium work together but need proper balance. Learn the ideal 2:1 ratio.

Quick Answer

Magnesium and calcium work together; ideal ratio is 1:2 (Mg:Ca).

Recommendation: Balance your magnesium and calcium intake.

magnesium + calcium

Low Riskratio imbalance

Magnesium and calcium work together; ideal ratio is 1:2 (Mg:Ca).

Tip: Balance your magnesium and calcium intake.

Safe Dosage Comparison (5 Regional Standards)

Standardmagnesiumcalcium
US (FDA)420 / 350 mg
(RDA/UL)		1000 / 2500 mg
(RDA/UL)
EU (EFSA)420 / 350 mg
(RDA/UL)		1000 / 2500 mg
(RDA/UL)
AU (TGA)420 / 350 mg
(RDA/UL)		1000 / 2500 mg
(RDA/UL)
CN (CNS)330 / 350 mg
(RDA/UL)		800 / 2000 mg
(RDA/UL)
JP (MHLW)340 / 350 mg
(RDA/UL)		800 / 2300 mg
(RDA/UL)

Values shown as RDA (Recommended Dietary Allowance) / UL (Tolerable Upper Intake Level). Sources: NIH, FDA, EFSA, FSANZ, CNS, MHLW.

Frequently Asked Questions

What is the ideal calcium to magnesium ratio?

Approximately 2:1 (calcium:magnesium). For 600 mg calcium, aim for 300 mg magnesium.

Taking More Supplements?

This page only checks one pair. Use NutriAudit to check your full supplement stack for interactions, duplicates, and safe dosages.

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Not medical advice. Always consult a qualified healthcare professional for personal medical decisions.