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ALDACTAZIDE® (spironolactone, hydrochlorothiazide) Description

DESCRIPTION

ALDACTAZIDE oral tablets contain:

spironolactone . . . . . . . . . . . . . . . . . . . . 25 mg
hydrochlorothiazide . . . . . . . . . . . . . . . . 25 mg

or

spironolactone . . . . . . . . . . . . . . . . . . . . 50 mg
hydrochlorothiazide . . . . . . . . . . . . . . . . 50 mg

Spironolactone (ALDACTONE®), an aldosterone antagonist, is 17-hydroxy-7α-mercapto-3-oxo-17α-pregn-4-ene-21-carboxylic acid γ-lactone acetate and has the following structural formula:

Chemical Structure

Spironolactone is practically insoluble in water, soluble in alcohol, and freely soluble in benzene and in chloroform.

Hydrochlorothiazide, a diuretic and antihypertensive, is 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide and has the following structural formula:

Chemical Structure

Hydrochlorothiazide is slightly soluble in water and freely soluble in sodium hydroxide solution.

Inactive ingredients include calcium sulfate, corn starch, flavor, hydroxypropyl cellulose, hypromellose, iron oxide, magnesium stearate, polyethylene glycol, povidone, and titanium dioxide.

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