Can I take Calcium with Magnesium?

Usually yes, but not at the same time. High doses (>500mg each) compete for absorption Take at different times of day

Why do Calcium and Magnesium interact?

High doses (>500mg each) compete for absorption The interaction is moderate.

Calcium + Magnesium

Can you take Calcium and Magnesium together? Here's what the science shows.

Moderate InteractionIngredientMD curated

Calcium and Magnesium interact moderately. High doses (>500mg each) compete for absorption

Bottom line: Take at different times of day

How They Interact

High doses (>500mg each) compete for absorption

Timing

Take at different times of day

What to do about it

Take at different times of day

Evidence Sources

IngredientMD curated interaction database

Common Questions

Calcium and Magnesium have some interaction to consider. High doses (>500mg each) compete for absorption Take at different times of day

Compare Side-by-Side

Calcium vs Magnesium: what each one is for

Related Interactions

Magnesium + Calcium Zinc + Copper Iron + Calcium Iron + Zinc Calcium + Vitamin D Magnesium + Vitamin D

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Every ingredient page carries the interactions, cautions and timing behind entries like this one.

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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. Always consult with a healthcare provider before making changes to your supplement regimen, especially if you take medications.