Drug interactions
Dofetilide + Oxaliplatin
Severity: Major
Dofetilide and Oxaliplatin: major interaction.
Last updated Sources: US FDA label
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 drugs can prolong the QT interval, and dofetilide carries a high intrinsic risk of torsades de pointes. Oxaliplatin-related electrolyte disturbances or renal impairment can raise dofetilide exposure and risk.
What this interaction means in plain words
Dofetilide and Oxaliplatin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dofetilide belongs to Cardiovascular; Oxaliplatin belongs to Oncology.
Why it happens
Additive QT prolongation through pharmacodynamic effects; oxaliplatin-induced renal or electrolyte changes may further increase dofetilide effects.
What to do
Avoid the combination where possible and consider another antiarrhythmic. If it must be used, monitor the ECG continuously or frequently, and check renal function and electrolytes.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dofetilide and Oxaliplatin, 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.
References
Other interactions of Oxaliplatin
- Adenovirus types 4 and 7 live + Oxaliplatin Contraindicated
- Bcg vaccine live + Oxaliplatin Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Oxaliplatin Contraindicated
- Measles mumps and rubella vaccine live + Oxaliplatin Contraindicated
- Measles mumps and rubella vaccine + Oxaliplatin Contraindicated
- Measles mumps rubella and varicella vaccine live + Oxaliplatin Contraindicated
Other interactions of Dofetilide
- Amiodarone + Dofetilide Contraindicated
- Amisulpride + Dofetilide Contraindicated
- Amlodipine-hydrochlorothiazide-valsartan + Dofetilide Contraindicated
- Amlodipine-olmesartan-hydrochlorothiazide + Dofetilide Contraindicated
- Candesartan-hydrochlorothiazide + Dofetilide Contraindicated
- Captopril-hydrochlorothiazide + Dofetilide Contraindicated
Frequently asked questions
Can I take Dofetilide with Oxaliplatin?
MediHelp rates the interaction as major. Dofetilide and Oxaliplatin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs can prolong the QT interval, and dofetilide carries a high intrinsic risk of torsades de pointes. Oxaliplatin-related electrolyte disturbances or renal impairment can raise dofetilide exposure and risk.
How serious is the interaction between Dofetilide and Oxaliplatin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible and consider another antiarrhythmic. If it must be used, monitor the ECG continuously or frequently, and check renal function and electrolytes.
What other medicines interact with Oxaliplatin?
MediHelp also lists interactions of Oxaliplatin with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Oxaliplatin 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.
