Can I Take These?

Can You Take Calcium and Vitamin C Together?

No documented interaction was identified between vitamin C and calcium in the sources reviewed.

No documented interaction identifiedEvidence: Moderate

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

What the interaction means

Vitamin C's NIH fact sheet states its only documented medication-interaction concerns are with radiation therapy, chemotherapeutic agents, and statins; it does not mention calcium. This project's existing published content mentions calcium only as one of several dietary compounds that vitamin C helps counteract as an inhibitor of iron absorption (a three-way iron-specific note, not a direct vitamin C/calcium interaction), and does not otherwise document a direct interaction between vitamin C and calcium.

No documented interaction was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.

Practical context

Vitamin C's own current authoritative fact sheet was checked directly, in full. This catalog's existing sourced content for calcium was also checked for any mention of vitamin C or ascorbic acid; the only mention found concerned iron absorption specifically, not a direct calcium/vitamin-C interaction.

What the sources say

Vitamin C — Health Professional Fact Sheet — NIH Office of Dietary Supplements

Last reviewed 2026-08-24

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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