Can I Take Magnesium and Zinc Together? Safety & Absorption Guide

Magnesium and zinc can be taken together at normal doses. Learn when high doses cause competition and safe dosage.

Quick Answer

Based on our database, there are no known harmful interactions between magnesium and zinc. However, this does not guarantee safety — consult a healthcare provider.

Safe Dosage Comparison (5 Regional Standards)

Standardmagnesiumzinc
US (FDA)420 / 350 mg
(RDA/UL)
11 / 40 mg
(RDA/UL)
EU (EFSA)420 / 350 mg
(RDA/UL)
11 / 40 mg
(RDA/UL)
AU (TGA)420 / 350 mg
(RDA/UL)
11 / 40 mg
(RDA/UL)
CN (CNS)330 / 350 mg
(RDA/UL)
12.5 / 40 mg
(RDA/UL)
JP (MHLW)340 / 350 mg
(RDA/UL)
10 / 40 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

Can I take magnesium and zinc together at night?

Yes, at normal doses (magnesium 200-400 mg, zinc 15-30 mg) they can be taken together, including at night. Both support sleep quality.

Do magnesium and zinc compete for absorption?

At normal doses, no. Competition occurs primarily at very high doses (zinc above 142 mg/day). Standard supplement doses are safe together.

Taking More Supplements?

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

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