<unk>  (Tonocard®) is a class Ib antiarrhythmic agent. It is no longer sold in the United States.
Quick look at the Pharmacokinetics
Tocaine is a lidocaine analog, that does not have significant 1st pass metabolism.  It is found in two enantiomers.  The R isomer is 4x as potent as the S.  Oral bioavaliability is 0.9-1.0. In the blood<unk>  is 10-20% protein bound. The Volume of distribution is 2.5-3.5 L/kg.  30-50% is excreted unchanged in the urine.  The more active R-isomer is cleared faster in anephric patients or those with severe renal dysfunction.  The main metabolite is the glucuronidated<unk>  carbamic acid.  The glucuronosyl transferase is apparently induced by rifampin.  Weak inhibition of Cyp1A2 leads to a mild theophylline interaction. (Not verbatim)
Tocainide detailed information
Esmolol detailed information
Metoprolol detailed information
Ventricular fibrillation physical examination
Sudden cardiac death other diagnostic studies
Delirium tremens electrocardiogram
Encephalopathy electrocardiogram
Tenecteplase detailed information