Common sodium channel blockers which cause QRS widening.
Anticonvulsants:
- Carbamazepine
Antidysrhythmics:
- Group IA and IC
- Group II (Propranolol)
- Group IV (Diltiazem and Verapamil)
Antihistamines:
- Diphenhydramine
Antimalarial drugs:
- Chloroquine
- Hydroxychloroquine
- Quinine
Antipsychotics:
- Phenothiazines
Drugs of abuse:
- Cocaine
Opioids:
- Propoxyphene
Other antidepressants
- Bupropion
- Mirtazapine
- Venlafaxine
Tricyclic Antidepressants
- Amitriptyline
- Desipramine
- Doxepin
- Imipramine
- Maprotiline
- Nortriptyline
Antiviral:
- Amantadine
Beta Blockers:
- Propranolol
Chemotherapy drugs
- Adriamycin
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