Can you take Calcium and Manganese together?
Both minerals can interfere with each other's uptake. Separating them by a couple of hours avoids the issue.
Severity
Caution
Evidence
moderate
Timing
Separate by 2+ hours.
How it works
Calcium can inhibit manganese absorption through competitive binding at intestinal transport sites.
The interaction is less studied than calcium–iron, but in vitro data supports competition at the absorption level. At standard supplement doses, separation is the practical solution. Manganese needs are small (2–5 mg/day) and often met through diet.
What to do
Take manganese at a different meal from calcium. The doses involved are usually small, so this is a precaution rather than a critical concern.
Frequently asked
Should I separate Calcium and Manganese?
Consider separating them. Separate by 2+ hours. Consult a healthcare professional for personalised advice.
Why do Calcium and Manganese interact?
Calcium can inhibit manganese absorption through competitive binding at intestinal transport sites.
How strong is the evidence for this interaction?
The evidence is moderate. Some studies support this interaction, but more research may be needed.
About these supplements
Other Calcium interactions
Other Manganese interactions
Related reading
Check your full stack
for interactions.
See what competes, what combines well, and when to take everything. Every interaction cites a published source.
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6 supplements
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1 flagZinc and Iron compete for the same absorption pathway. Take at least 2 hours apart.
Supplements
This information is for educational purposes only. It is not medical advice and does not diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare professional.