Labetalone hydrochloride is an impurity of Labetalol. Labetalol is an orally active adrenoceptor blocking drug which is a competitive antagonist at both alpha- and beta-adrenoceptor sites[1].
[1]. Brogden RN, et al. Labetalol: a review of its pharmacology and therapeutic use in hypertension. Drugs. 1978;15(4):251-270.
















