Drug interactions
Ciprofloxacin + Sodium citrate / citric acid
Severity: Moderate
Ciprofloxacin and Sodium citrate / citric acid: 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
Citrate is metabolized to bicarbonate and alkalinizes the urine, which can reduce ciprofloxacin solubility and risk crystalluria. Aluminum-free citrate has limited effect on absorption, so the main concern is renal.
What this interaction means in plain words
Ciprofloxacin and Sodium citrate / citric acid 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
Urinary alkalinization decreases ciprofloxacin solubility, promoting crystal formation.
What to do
Ensure adequate fluid intake and monitor renal function and urinalysis. Separate dosing by a couple of hours if prolonged combined use is needed.
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 Sodium citrate / citric acid?
MediHelp rates the interaction as moderate. Ciprofloxacin and Sodium citrate / citric acid 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. Citrate is metabolized to bicarbonate and alkalinizes the urine, which can reduce ciprofloxacin solubility and risk crystalluria. Aluminum-free citrate has limited effect on absorption, so the main concern is renal.
How serious is the interaction between Ciprofloxacin and Sodium citrate / citric acid?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ensure adequate fluid intake and monitor renal function and urinalysis. Separate dosing by a couple of hours if prolonged combined use is needed.
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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