Hydralazine hydrochloride, USP, is an antihypertensive
for oral administration.
Its chemical name is
1 -hydrazinophthalazine monohydrochloride.
Hydralazine hydrochloride, USP is a white
to off-white, odorless crystalline powder. It is soluble
in water, slightly soluble
in alcohol, and very
slightly soluble in ether. It melts at about 275oC, with
decomposition, and has a molecular weight
of 196.84. Each tablet
for oral administration
contains 10 mg, 25 mg, 50 mg
or 100 mg hydralazine hydrochloride,
USP Tablets also contain anhydrous
starch glycolate, stearic acid
and FD&C Yellow #6.