so·ta·lol 'sōt-ə-.lȯl, -.lōl n a beta-adrenergic blocking agent administered in the form of its hydrochloride C12H20N2O3S·HCl to treat ventricular arrhythmias
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n.
a drug (see beta blocker) used to treat abnormal heart rhythm. It is administered by mouth or injection; side-effects may include digestive upsets, tiredness, and dizziness. Trade names: Beta-Cardone, Sotacor.
Medical dictionary. 2011.