Drug interactions
Calcium citrate + Carbonyl iron
Severity: Minor
Calcium citrate and Carbonyl iron: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Calcium citrate taken with oral iron can reduce iron absorption. The effect is typically modest but may slow correction of iron deficiency.
What this interaction means in plain words
Calcium citrate and Carbonyl iron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Calcium inhibits intestinal iron uptake by competing for transport.
What to do
Separate doses by at least 2 hours. Check iron indices if anemia persists.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Carbonyl iron
- Aluminum hydroxide + Carbonyl iron Moderate
- Baloxavir marboxil + Carbonyl iron Moderate
- Calcium acetate + Carbonyl iron Moderate
- Calcium carbonate + Carbonyl iron Moderate
- Calcium + Carbonyl iron Moderate
- Carbidopa-entacapone-levodopa + Carbonyl iron Moderate
Frequently asked questions
Can I take Calcium citrate with Carbonyl iron?
MediHelp rates the interaction as minor. Calcium citrate and Carbonyl iron have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Calcium citrate taken with oral iron can reduce iron absorption. The effect is typically modest but may slow correction of iron deficiency.
How serious is the interaction between Calcium citrate and Carbonyl iron?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate doses by at least 2 hours. Check iron indices if anemia persists.
What other medicines interact with Carbonyl iron?
MediHelp also lists interactions of Carbonyl iron with, for example, Aluminum hydroxide, Baloxavir marboxil, Calcium acetate. The full list is on the Carbonyl iron page.
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