Drug interactions
Calcium citrate + Minocycline
Severity: Moderate
Calcium citrate and Minocycline: 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 citrate taken with oral minocycline may bind the antibiotic and lower its absorption, which could reduce efficacy. The effect is generally manageable by timing.
What this interaction means in plain words
Calcium citrate and Minocycline 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.
Why it happens
Chelation of minocycline by calcium ions in the gastrointestinal tract reduces absorption.
What to do
Take minocycline at least 2 hours before or 4 hours after calcium citrate. Monitor clinical response to the antibiotic.
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 Minocycline
- Acitretin + Minocycline Contraindicated
- Isotretinoin + Minocycline Contraindicated
- Cholera vaccine + Minocycline Major
- Methoxyflurane + Minocycline Major
- Minocycline + Palovarotene Major
- Minocycline + Pexidartinib Major
Frequently asked questions
Can I take Calcium citrate with Minocycline?
MediHelp rates the interaction as moderate. Calcium citrate and Minocycline 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 citrate taken with oral minocycline may bind the antibiotic and lower its absorption, which could reduce efficacy. The effect is generally manageable by timing.
How serious is the interaction between Calcium citrate and Minocycline?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take minocycline at least 2 hours before or 4 hours after calcium citrate. Monitor clinical response to the antibiotic.
What other medicines interact with Minocycline?
MediHelp also lists interactions of Minocycline with, for example, Acitretin, Isotretinoin, Cholera vaccine. The full list is on the Minocycline page.
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