Drug interactions
Dexamethasone-tobramycin + Disopyramide
Severity: Minor
Dexamethasone-tobramycin and Disopyramide: 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
Dexamethasone induces CYP3A4 and could lower disopyramide concentrations, reducing antiarrhythmic effect. This is relevant mainly with systemic corticosteroid therapy, as topical dexamethasone-tobramycin has negligible systemic exposure.
What this interaction means in plain words
Dexamethasone-tobramycin and Disopyramide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dexamethasone-tobramycin belongs to Anti Bacterial; Disopyramide belongs to Cardiovascular.
Why it happens
Dexamethasone-mediated CYP3A4 induction increases disopyramide metabolism.
What to do
With systemic dexamethasone, monitor ECG and arrhythmia control and adjust disopyramide dose if efficacy falls. No action is needed with topical use.
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 Dexamethasone-tobramycin
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 Dexamethasone-tobramycin with Disopyramide?
MediHelp rates the interaction as minor. Dexamethasone-tobramycin and Disopyramide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone induces CYP3A4 and could lower disopyramide concentrations, reducing antiarrhythmic effect. This is relevant mainly with systemic corticosteroid therapy, as topical dexamethasone-tobramycin has negligible systemic exposure.
How serious is the interaction between Dexamethasone-tobramycin and Disopyramide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: With systemic dexamethasone, monitor ECG and arrhythmia control and adjust disopyramide dose if efficacy falls. No action is needed with topical use.
What other medicines interact with Dexamethasone-tobramycin?
MediHelp also lists interactions of Dexamethasone-tobramycin with, for example, Capreomycin, Carboplatin, Ciprofloxacin. The full list is on the Dexamethasone-tobramycin page.
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