Drug interactions
Ciprofloxacin + Trimagnesium
Severity: Moderate
Ciprofloxacin and Trimagnesium: 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
Magnesium salts bind ciprofloxacin in the gastrointestinal tract and greatly reduce its absorption. This can cause subtherapeutic antibiotic concentrations and treatment failure.
What this interaction means in plain words
Ciprofloxacin and Trimagnesium 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 ciprofloxacin by magnesium cations in the gut, reducing bioavailability.
What to do
Give ciprofloxacin at least 2 hours before or 6 hours after magnesium. Consider an alternative if the spacing cannot be followed.
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 Ciprofloxacin
- Agomelatine + Ciprofloxacin Contraindicated
- Ciprofloxacin + Fezolinetant Contraindicated
- Ciprofloxacin + Thioridazine Contraindicated
- Ciprofloxacin + Tizanidine Contraindicated
- Ciprofloxacin + Vandetanib Contraindicated
- Alosetron + Ciprofloxacin Major
Frequently asked questions
Can I take Ciprofloxacin with Trimagnesium?
MediHelp rates the interaction as moderate. Ciprofloxacin and Trimagnesium 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. Magnesium salts bind ciprofloxacin in the gastrointestinal tract and greatly reduce its absorption. This can cause subtherapeutic antibiotic concentrations and treatment failure.
How serious is the interaction between Ciprofloxacin and Trimagnesium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Give ciprofloxacin at least 2 hours before or 6 hours after magnesium. Consider an alternative if the spacing cannot be followed.
What other medicines interact with Ciprofloxacin?
MediHelp also lists interactions of Ciprofloxacin with, for example, Agomelatine, Fezolinetant, Thioridazine. The full list is on the Ciprofloxacin page.
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