Drug interactions
Cidofovir + Tobramycin
Severity: Contraindicated
Cidofovir and Tobramycin: contraindicated 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
Both agents are toxic to the renal tubule, so together they can cause serious acute kidney injury. Cidofovir labeling contraindicates its use with other nephrotoxic drugs such as aminoglycosides.
What this interaction means in plain words
Cidofovir and Tobramycin are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Cidofovir belongs to Anti Virals; Tobramycin belongs to Anti Bacterial.
Why it happens
Additive direct tubular nephrotoxicity.
What to do
Do not co-administer; stop tobramycin at least 7 days before cidofovir or select a non-nephrotoxic alternative.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Cidofovir and Tobramycin, 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 14 days on the web. No card needed.
Other interactions of Tobramycin
Other interactions of Cidofovir
- Amikacin + Cidofovir Contraindicated
- Amphotericin b deoxycholate + Cidofovir Contraindicated
- Amphotericin b + Cidofovir Contraindicated
- Bacitracin + Cidofovir Contraindicated
- Capreomycin + Cidofovir Contraindicated
- Cephaloridine + Cidofovir Contraindicated
Frequently asked questions
Can I take Cidofovir with Tobramycin?
MediHelp rates the interaction as contraindicated. Cidofovir and Tobramycin are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both agents are toxic to the renal tubule, so together they can cause serious acute kidney injury. Cidofovir labeling contraindicates its use with other nephrotoxic drugs such as aminoglycosides.
How serious is the interaction between Cidofovir and Tobramycin?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not co-administer; stop tobramycin at least 7 days before cidofovir or select a non-nephrotoxic alternative.
What other medicines interact with Tobramycin?
MediHelp also lists interactions of Tobramycin with, for example, Adefovir, Amikacin, Amphotericin b deoxycholate. The full list is on the Tobramycin 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.
