N-(Aryloxyalkyl)-N'-(aminoalkyl)ureas and thioureas having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen, loweralkyl, cycloalkyl, phenyl or phenyllower alkyl, and R.sup.3 and R.sup.4 are hydrogen, loweralkyl, phenyl and phenylalkyl or R.sup.3 and R.sup.4 taken together with the adjacent nitrogen form a heterocyclic residue are disclosed in a method of suppressing cardiac arrhythmias.
N-(Aryloxyalkyl)-N'-(aminoalkyl)ureas and thioureas having the formula:
wherein R1 and R2 each represent a hydrogen atom or a loweralkyl, cycloalkyl, phenyl or phenyllower alkyl group, and R3 and R4 each represent a hydrogen atom or a loweralkyl, phenyl or phenylalkyl group or R3 and R4 taken together with the adjacent nitrogen form a heterocyclic residue are disclosed for use in treating cardiac arrhythmias.
N-(Aryloxyalkyl)-N'-(aminoalkyl)ureas and thioureas having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen, loweralkyl, cycloalkyl, phenyl or phenyllower alkyl, and R.sup.3 and R.sup.4 are hydrogen, loweralkyl, phenyl and phenylalkyl or R.sup.3 and R.sup.4 taken together with the adjacent nitrogen form a heterocyclic residue are disclosed in a method of suppressing cardiac arrhythmias.