Drug interactions
Disopyramide + Lidocaine
Severity: Major
Disopyramide and Lidocaine: major 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 are class I antiarrhythmics with negative inotropic and conduction-slowing effects. Together they may cause additive myocardial depression, conduction block, proarrhythmia or worsening heart failure, particularly with structural heart disease.
What this interaction means in plain words
Disopyramide and Lidocaine 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.
Disopyramide belongs to Cardiovascular; Lidocaine belongs to Cardiovascular.
Why it happens
Additive sodium channel blockade and negative inotropy.
What to do
Use with continuous ECG and hemodynamic monitoring, and avoid in patients with heart failure or conduction disease. Reduce doses and stop if QRS widening or hypotension occurs.
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?
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Other interactions of Lidocaine
- Bupivacaine liposome + Lidocaine Major
- Ex vivo expanded autologous human corneal epithelial cells containing stem cells + Lidocaine Major
- Lidocaine + Nirmatrelvir / ritonavir Major
- Lidocaine + Ombitasvir / paritaprevir / ritonavir and dasabuvir Major
- Lidocaine + Pimozide Major
- Lidocaine + Procainamide Major
Other interactions of Disopyramide
- Amisulpride + Disopyramide Contraindicated
- Desipramine + Disopyramide Contraindicated
- Disopyramide + Dronedarone Contraindicated
- Disopyramide + Itraconazole Contraindicated
- Disopyramide + Ketoconazole Contraindicated
- Disopyramide + Maprotiline Contraindicated
Frequently asked questions
Can I take Disopyramide with Lidocaine?
MediHelp rates the interaction as major. Disopyramide and Lidocaine 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 are class I antiarrhythmics with negative inotropic and conduction-slowing effects. Together they may cause additive myocardial depression, conduction block, proarrhythmia or worsening heart failure, particularly with structural heart disease.
How serious is the interaction between Disopyramide and Lidocaine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use with continuous ECG and hemodynamic monitoring, and avoid in patients with heart failure or conduction disease. Reduce doses and stop if QRS widening or hypotension occurs.
What other medicines interact with Lidocaine?
MediHelp also lists interactions of Lidocaine with, for example, Bupivacaine liposome, Ex vivo expanded autologous human corneal epithelial cells containing stem cells, Nirmatrelvir / ritonavir. The full list is on the Lidocaine page.
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