Drug interactions
Calcium acetate + Iron
Severity: Moderate
Calcium acetate and Iron: moderate 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 acetate, used as a phosphate binder, can reduce the absorption of oral iron when taken together. This may blunt the response to iron therapy in patients with anemia, such as those with kidney disease.
What this interaction means in plain words
Calcium acetate and Iron can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Calcium acetate belongs to Genitourinary; Iron belongs to Gastrointestinal Tract.
Why it happens
Calcium competes with iron for intestinal uptake and forms poorly absorbed complexes.
What to do
Separate oral iron from calcium acetate by at least 2 hours, and monitor hemoglobin and ferritin or transferrin saturation.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Iron
- Acetohydroxamic acid + Iron Moderate
- Aluminum hydroxide + Iron Moderate
- Baloxavir marboxil + Iron Moderate
- Calcium carbonate + Iron Moderate
- Calcium citrate + Iron Moderate
- Carbidopa + Iron Moderate
Other interactions of Calcium acetate
Frequently asked questions
Can I take Calcium acetate with Iron?
MediHelp rates the interaction as moderate. Calcium acetate and Iron can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Calcium acetate, used as a phosphate binder, can reduce the absorption of oral iron when taken together. This may blunt the response to iron therapy in patients with anemia, such as those with kidney disease.
How serious is the interaction between Calcium acetate and Iron?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate oral iron from calcium acetate by at least 2 hours, and monitor hemoglobin and ferritin or transferrin saturation.
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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