Drug interactions
Calcium + Quinapril
Severity: Minor
Calcium and Quinapril: 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
Quinapril tablets contain magnesium carbonate as an excipient, which can bind the drug in the gut when taken with antacid-type calcium salts. Absorption of quinapril may be modestly reduced, although a meaningful loss of blood pressure control is uncommon.
What this interaction means in plain words
Calcium and Quinapril 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
Possible reduced gastrointestinal absorption of quinapril due to binding or raised gastric pH; the mechanism is not firmly established.
What to do
Separate calcium carbonate and quinapril by about 2 hours if feasible. Check blood pressure if antacids are used regularly.
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 Calcium
- Calcium + Ceftriaxone Contraindicated
- Acalabrutinib + Calcium Moderate
- Alendronate + Calcium Moderate
- Atazanavir + Calcium Moderate
- Baloxavir marboxil + Calcium Moderate
- Bendroflumethiazide + Calcium Moderate
Frequently asked questions
Can I take Calcium with Quinapril?
MediHelp rates the interaction as minor. Calcium and Quinapril have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Quinapril tablets contain magnesium carbonate as an excipient, which can bind the drug in the gut when taken with antacid-type calcium salts. Absorption of quinapril may be modestly reduced, although a meaningful loss of blood pressure control is uncommon.
How serious is the interaction between Calcium and Quinapril?
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 calcium carbonate and quinapril by about 2 hours if feasible. Check blood pressure if antacids are used regularly.
What other medicines interact with Calcium?
MediHelp also lists interactions of Calcium with, for example, Ceftriaxone, Acalabrutinib, Alendronate. The full list is on the Calcium page.
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