NCIt definition : The hydrochloride salt form of betaxolol, a beta-1-selective adrenergic receptor antagonist
without intrinsic sympathomimetic activity. Betaxolol hydrochloride acts on the heart
and circulatory system and decreases cardiac contractility and rate, thereby reducing
cardiac output. When applied topically in the eye, it lowers intraocular pressure
by reducing aqueous humor secretion.;