Drug interactions
Calcium citrate + Ferrous gluconate
Severity: Minor
Calcium citrate and Ferrous gluconate: 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 supplements can reduce the absorption of oral iron when taken together. This may blunt the response to iron therapy.
What this interaction means in plain words
Calcium citrate and Ferrous gluconate 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 and may form poorly absorbed complexes.
What to do
Separate oral iron from calcium citrate by at least 2 hours. Monitor iron indices if iron deficiency 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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Calcium citrate and Ferrous gluconate, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Ferrous gluconate
Frequently asked questions
Can I take Calcium citrate with Ferrous gluconate?
MediHelp rates the interaction as minor. Calcium citrate and Ferrous gluconate 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 supplements can reduce the absorption of oral iron when taken together. This may blunt the response to iron therapy.
How serious is the interaction between Calcium citrate and Ferrous gluconate?
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 oral iron from calcium citrate by at least 2 hours. Monitor iron indices if iron deficiency persists.
What other medicines interact with Ferrous gluconate?
MediHelp also lists interactions of Ferrous gluconate with, for example, Ciprofloxacin, Acetohydroxamic acid, Aluminum hydroxide. The full list is on the Ferrous gluconate page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
