Can I Take These?

Can You Take Caffeine and Calcium Together?

Caffeine may interfere with how much calcium your body absorbs.

MonitorEvidence: Moderate

See the full Caffeine page and Calcium page for other reviewed interactions and reference information.

What the interaction means

MedlinePlus states, in its list of caffeine's effects on the body: "May interfere with the absorption of calcium in the body."

Why it may happen

Not further specified by the source beyond this general statement.

Practical context

No dose threshold, mechanism, or spacing interval is given in this source, and calcium's own NIH fact sheet does not independently corroborate this from the calcium side -- treat this as a general consideration for people with high caffeine intake and calcium-related health goals, not a precise dosing rule.

What the sources say

Caffeine — MedlinePlus, U.S. National Library of Medicine

Last reviewed 2026-08-23

Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.

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