Drug interactions
Dofetilide + Lidocaine-prilocaine
Severity: Minor
Dofetilide and Lidocaine-prilocaine: minor 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
Lidocaine-prilocaine is applied topically with minimal systemic exposure under normal use, so any additive cardiac effect with dofetilide is expected to be small. Systemic lidocaine has antiarrhythmic effects but is not a recognized interacting drug with dofetilide at topical doses.
What this interaction means in plain words
Dofetilide and Lidocaine-prilocaine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dofetilide belongs to Cardiovascular; Lidocaine-prilocaine belongs to Genitourinary.
Why it happens
Possible additive cardiac electrophysiologic effects, but systemic exposure from topical use is low.
What to do
No routine action is needed with normal topical use; avoid applying large areas under occlusion in patients on dofetilide. Monitor ECG if substantial systemic absorption is possible.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Lidocaine-prilocaine
- Lidocaine-prilocaine + Phenazopyridine Major
- Bupivacaine implant + Lidocaine-prilocaine Moderate
- Bupivacaine liposome + Lidocaine-prilocaine Moderate
- Disopyramide + Lidocaine-prilocaine Moderate
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Lidocaine-prilocaine Moderate
- Lidocaine-prilocaine + Mexiletine Moderate
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 Lidocaine-prilocaine?
MediHelp rates the interaction as minor. Dofetilide and Lidocaine-prilocaine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Lidocaine-prilocaine is applied topically with minimal systemic exposure under normal use, so any additive cardiac effect with dofetilide is expected to be small. Systemic lidocaine has antiarrhythmic effects but is not a recognized interacting drug with dofetilide at topical doses.
How serious is the interaction between Dofetilide and Lidocaine-prilocaine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed with normal topical use; avoid applying large areas under occlusion in patients on dofetilide. Monitor ECG if substantial systemic absorption is possible.
What other medicines interact with Lidocaine-prilocaine?
MediHelp also lists interactions of Lidocaine-prilocaine with, for example, Phenazopyridine, Bupivacaine implant, Bupivacaine liposome. The full list is on the Lidocaine-prilocaine page.
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