Class Iii Antiarrhythmics

Check Class Iii Antiarrhythmics Interactions →

8 interactions on record

Class Iii Antiarrhythmics has 8 known drug interactions based on U.S. FDA drug labeling data. Of these, 7 are contraindicated combinations that should be avoided entirely. 1 are classified as major interactions requiring close medical supervision. Notable interactions include combinations with Amiodarone Hydrochloride, Dronedarone, Droperidol. Patients taking Class Iii Antiarrhythmics should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.

Total: 8
Contraindicated: 7
Major: 1

Contraindicated (7)

Class Iii Antiarrhythmics + Amiodarone Hydrochloride— Increased risk of Torsade de Pointes. Avoid concomitant use.
Class Iii Antiarrhythmics + Dronedarone— Contraindicated due to potential risk of torsade de pointes-type ventricular tachycardia.
Class Iii Antiarrhythmics + Droperidol— Class III antiarrhythmics should not be used together with droperidol due to potential QT prolongation and arrhythmia ri…
Class Iii Antiarrhythmics + Moxifloxacin— Concomitant use with Class III antiarrhythmics may enhance proarrhythmic effects. Avoid concomitant use.
Class Iii Antiarrhythmics + Moxifloxacin Hydrochloride— Proarrhythmic effect may be enhanced. Avoid concomitant use.
Class Iii Antiarrhythmics + Moxifloxacin Hydrochloride Tablets, 400 Mg— Moxifloxacin may enhance proarrhythmic effect. Avoid concomitant use.
Class Iii Antiarrhythmics + Quinine Sulfate— Quinine sulfate prolongs QT interval; concomitant use may cause ECG abnormalities including QT prolongation and Torsades…

Major (1)

Class Iii Antiarrhythmics + Fosfomycin Disodium— Co-administration may increase risk for ventricular arrhythmia due to QT prolongation. Avoid co-administration.

Class Iii Antiarrhythmics + Amiodarone Hydrochloride⛔Contraindicated

Increased risk of Torsade de Pointes. Avoid concomitant use.

Class Iii Antiarrhythmics + Dronedarone⛔Contraindicated

Contraindicated due to potential risk of torsade de pointes-type ventricular tachycardia.

Class Iii Antiarrhythmics + Droperidol⛔Contraindicated

Class III antiarrhythmics should not be used together with droperidol due to potential QT prolongation and arrhythmia risk.

Class Iii Antiarrhythmics + Moxifloxacin⛔Contraindicated

Concomitant use with Class III antiarrhythmics may enhance proarrhythmic effects. Avoid concomitant use.

Class Iii Antiarrhythmics + Moxifloxacin Hydrochloride⛔Contraindicated

Proarrhythmic effect may be enhanced. Avoid concomitant use.

Class Iii Antiarrhythmics + Moxifloxacin Hydrochloride Tablets, 400 Mg⛔Contraindicated

Moxifloxacin may enhance proarrhythmic effect. Avoid concomitant use.

Class Iii Antiarrhythmics + Quinine Sulfate⛔Contraindicated

Quinine sulfate prolongs QT interval; concomitant use may cause ECG abnormalities including QT prolongation and Torsades de Pointes.

Class Iii Antiarrhythmics + Fosfomycin Disodium⚠️Major

Co-administration may increase risk for ventricular arrhythmia due to QT prolongation. Avoid co-administration.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.