Drug interactions
Carbamazepine + Ciprofloxacin
Severity: Moderate
Carbamazepine and Ciprofloxacin: 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
Ciprofloxacin has been reported to alter carbamazepine concentrations, with some cases of increased levels and toxicity such as dizziness, ataxia and nystagmus. Quinolones may also lower the seizure threshold, which is relevant in patients with epilepsy.
What this interaction means in plain words
Carbamazepine and Ciprofloxacin 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.
Carbamazepine belongs to Central Nervous System; Ciprofloxacin belongs to Anti Bacterial.
Why it happens
Ciprofloxacin may inhibit CYP-mediated carbamazepine metabolism, and both agents can affect seizure threshold; the mechanism is not fully established.
What to do
Monitor carbamazepine serum levels and signs of toxicity when ciprofloxacin is started or stopped. Consider a non-quinolone antibiotic in patients with poorly controlled epilepsy.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Carbamazepine and Ciprofloxacin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Ciprofloxacin
- Agomelatine + Ciprofloxacin Contraindicated
- Ciprofloxacin + Fezolinetant Contraindicated
- Ciprofloxacin + Thioridazine Contraindicated
- Ciprofloxacin + Tizanidine Contraindicated
- Ciprofloxacin + Vandetanib Contraindicated
- Alosetron + Ciprofloxacin Major
Other interactions of Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Carbamazepine with Ciprofloxacin?
MediHelp rates the interaction as moderate. Carbamazepine and Ciprofloxacin 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. Ciprofloxacin has been reported to alter carbamazepine concentrations, with some cases of increased levels and toxicity such as dizziness, ataxia and nystagmus. Quinolones may also lower the seizure threshold, which is relevant in patients with epilepsy.
How serious is the interaction between Carbamazepine and Ciprofloxacin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor carbamazepine serum levels and signs of toxicity when ciprofloxacin is started or stopped. Consider a non-quinolone antibiotic in patients with poorly controlled epilepsy.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
