CARBAMIC ACID, [10-[3-(4-MORPHOLINYL)-1-OXOPROPYL]-10H-PHENOTHIAZIN-2-YL]-, ETHYL ESTER

Therapeutic Function

Antiarrhythmic

Side effects

The principal adverse gastrointestinal effect of moricizine is nausea (7%). Abdominal discomfort has also been reported. Dizziness (11%) is the most frequently reported CNS-related adverse effect. Such reactions increase in frequency with prolonged drug administration. As with other antiarrhythmic drugs, moricizine has proarrhythmic activity, which may manifest as new ventricular ectopic beats or a worsening of preexisting ventricular arrhythmias. These effects are most common in patients with depressed left ventricular function and a history of congestive heart failure. Cardiovascular effects requiring drug withdrawal include conduction defects, sinus pauses, junctional rhythm, and A-V block.

Drug interactions

Clinically significant interactions with moricizine do not appear to exist.

Precautions

Patients with preexisting second- or third-degree A-V block, cardiogenic shock, or drug hypersensitivity should not be treated with moricizine.

Definition

ChEBI: A phenothiazine substituted on the nitrogen by a 3-(morpholin-4-yl)propanoyl group, and at position 2 by an (ethoxycarbonyl)amino group.

Brand name

Ethmozine (Roberts Pharmaceutical).

General Description

Moricizine, ethyl 10-(3-morpholinopropionyl)phenothiazine-2-carbamate (Ethmozine), is aphenothiazine derivative used for the treatment of malignantventricular arrhythmias. It is categorized as a class ICantiarrhythmic agent, blocking the Na+ channel with 1:1stochiometry. The drug has higher affinity for the inactivatedstate than the activated or resting states. It appearsto bind to a site on the external side of the Na channelmembrane. It has been used to suppress life-threateningventricular arrhythmias.