. . . . . . "0"^^ . "tocainide"^^ . . . "0"^^ . . "tocainide"@en-us . . "104272170"@en-us . "04443918-n"^^ . . "antiarrhythmic drug (trade name Tonocard) used to treat ventricular arrhythmias when less dangerous drugs have failed"@en-us . "104443918"^^ . "Tonocard"@en-us .