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calcium and vitamin d

Vitamin D enhances calcium absorption

What's happening

Vitamin D is essential for proper calcium absorption in the gut. Without adequate D, only 10-15% of dietary calcium is absorbed.

Recommendation

Ensure adequate vitamin D status when supplementing calcium.

Timing

Can take together

Sources

  • — NIH
  • — Journal of Clinical Endocrinology

Frequently Asked Questions

Can I take calcium and vitamin d together?

Vitamin D enhances calcium absorption. Ensure adequate vitamin D status when supplementing calcium.

How should I time calcium and vitamin d?

Can take together

Is this interaction dangerous?

This interaction is rated “Synergy” by Formulate. Vitamin D is essential for proper calcium absorption in the gut. Without adequate D, only 10-15% of dietary calcium is absorbed.

Want to check your whole stack?

The free checker lets you add any combination of supplements and medications at once. Formulate's desktop app goes further — every stack change surfaces interaction alerts automatically.

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Medical disclaimer. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.