Drug interactions
Calcium carbonate + Delafloxacin
Severity: Moderate
Calcium carbonate and Delafloxacin: 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
Oral delafloxacin binds to calcium and other polyvalent cations in the gut, forming poorly absorbed chelates. Systemic exposure falls and may lead to subtherapeutic antibacterial levels and treatment failure.
What this interaction means in plain words
Calcium carbonate and Delafloxacin 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 carbonate belongs to Gastrointestinal Tract; Delafloxacin belongs to Anti Bacterial.
Why it happens
Chelation of delafloxacin by calcium cations in the gastrointestinal tract reduces its oral absorption.
What to do
Give oral delafloxacin at least 2 hours before or 6 hours after calcium carbonate. Alternatively use intravenous delafloxacin if separation is not feasible.
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 Calcium carbonate
Other interactions of Delafloxacin
- Aluminum hydroxide + Delafloxacin Moderate
- Calcium + Delafloxacin Moderate
- Carbonyl iron + Delafloxacin Moderate
- Delafloxacin + Didanosine Moderate
- Delafloxacin + Ferrous fumarate Moderate
- Delafloxacin + Ferrous gluconate Moderate
Frequently asked questions
Can I take Calcium carbonate with Delafloxacin?
MediHelp rates the interaction as moderate. Calcium carbonate and Delafloxacin 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. Oral delafloxacin binds to calcium and other polyvalent cations in the gut, forming poorly absorbed chelates. Systemic exposure falls and may lead to subtherapeutic antibacterial levels and treatment failure.
How serious is the interaction between Calcium carbonate and Delafloxacin?
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 oral delafloxacin at least 2 hours before or 6 hours after calcium carbonate. Alternatively use intravenous delafloxacin if separation is not feasible.
What other medicines interact with Calcium carbonate?
MediHelp also lists interactions of Calcium carbonate with, for example, Acalabrutinib, Alendronate, Amlodipine-hydrochlorothiazide-valsartan. The full list is on the Calcium carbonate page.
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