May 28, 2017
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(betaxolol hydrochloride and chlorthalidone) Tablets


Kerledex (betaxolol hydrochloride and chlorthalidone) is a combination product indicated for the treatment of hypertension. It combines the activities of betaxolol hydrochloride, a β1-selective (cardioselective) adrenergic receptor blocking agent, with chlorthalidone, a monosulfamyl diuretic.

Betaxolol hydrochloride is chemically described as 2-propanol, 1-[4-[2-(cyclopropylmethoxy) ethyl] phenoxy]-3-[(1-methylethyl)amino]-,hydrochloride,(±). It has the following chemical structure:

Betaxolol hydrochloride Structural Formula Illustration

Betaxolol hydrochloride is a water-soluble white crystalline powder with a molecular formula of C18H29NO3 • HCl and a molecular weight of 343.9. It is freely soluble in water, ethanol, chloroform, and methanol, and has a pKa of 9.4.

Chlorthalidone, a monosulfamyl diuretic, differs chemically from thiazide diuretics in that a double-ring system is incorporated in its structure. It is 2-chloro-5-(1-hydroxy-3-oxo-1isoindolinyl)benzenesulfonamide with a molecular formula of C14H11ClN2O4S and a molecular weight of 338.76. It is practically insoluble in water, ether and chloroform; soluble in methanol; and slightly soluble in alcohol.

Chlorthalidone Structural Formula Illustration

Kerledex is available as orally administered tablets containing 5 or 10 mg of betaxolol HCl and 12.5 mg of chlorthalidone (5/12.5; 10/12.5). Inactive ingredients include corn starch, hydroxypropyl methylcellulose, iron oxide colorant, lactose, magnesium stearate, polyethylene glycol 400, povidone, and titanium dioxide.

Last reviewed on RxList: 1/11/2017
This monograph has been modified to include the generic and brand name in many instances.

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