Drug interactions
Calcium chloride + Iron
Severity: Minor
Calcium chloride and 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
Oral calcium salts can reduce iron absorption when administered together. Calcium chloride is mainly used intravenously, so the oral interaction is rarely relevant.
What this interaction means in plain words
Calcium chloride and 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 competes with iron for intestinal uptake.
What to do
If oral calcium chloride is used, separate it from oral iron by at least 2 hours.
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 Iron
- Acetohydroxamic acid + Iron Moderate
- Aluminum hydroxide + Iron Moderate
- Baloxavir marboxil + Iron Moderate
- Calcium acetate + Iron Moderate
- Calcium carbonate + Iron Moderate
- Calcium citrate + Iron Moderate
Frequently asked questions
Can I take Calcium chloride with Iron?
MediHelp rates the interaction as minor. Calcium chloride and 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. Oral calcium salts can reduce iron absorption when administered together. Calcium chloride is mainly used intravenously, so the oral interaction is rarely relevant.
How serious is the interaction between Calcium chloride and 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: If oral calcium chloride is used, separate it from oral iron by at least 2 hours.
What other medicines interact with Iron?
MediHelp also lists interactions of Iron with, for example, Acetohydroxamic acid, Aluminum hydroxide, Baloxavir marboxil. The full list is on the Iron page.
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