tokens: Induction of the ventricular tachyarrhythmia was prevented by oral d , l - sotalol in 35 ( 43 % ) patients ; the ventricular tachyarrhythmia remained inducible in 40 ( 49 % ) patients ; and two ( 2 . 5 % ) patients did not tolerate even 40 mg of d , l - sotalol once daily .