Tocainide hydrochloride

Tocainide hydrochloride 화학적 특성, 용도, 생산

• 용도

  Tonocard(AstraZeneca).

• 일반 설명

  Tocainide hydrochloride,2-amino-2＇ ,6 ＇-propionoxyxylidide hydrochloride (Tonocard)(pKa 7.7), is an analog of lidocaine. It is orally active and haselectrophysiological properties like those of lidocaine. Totalbody clearance of tocainide hydrochloride is only166 mL/min, suggesting that hepatic clearance is not large.Because of low hepatic clearance, the hepatic extraction ratiomust be small; therefore, tocainide hydrochloride is unlikelyto be subject to a substantial first-pass effect. The drug differsfrom lidocaine, in that it lacks two ethyl groups, which providestocainide hydrochloride some protection from first-passhepatic elimination after oral ingestion. Tocainide hydrochlorideis hydrolyzed in a manner similar to that of lidocaine.None of its metabolites is active.

• Clinical Use

  Tocainide hydrochloride is classed as a IB antiarrhythmicagent and used orally to prevent or treat ventricular ectopyand tachycardia. The drug is given in 400- to 600-mgdoses every 8 hours.

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