Hydralazine
Hydrochloride Injection,
USP
Rx Only
DESCRIPTION:
Hydralazine Hydrochloride Injection, USP is an antihypertensive available in a 1 mL vial for intravenous and intramuscular administration. Each milliliter of the sterile, nonpyrogenic colorless solution contains Hydralazine Hydrochloride USP, 20 mg, Methylparaben NF, 0.65 mg, Propylparaben NF, 0.35 mg, Propylene Glycol USP, 103.6 mg, and Water for Injection q.s. The pH of the solution is 3.4 - 4.4. pH may be adjusted with Hydrochloric Acid and/or Sodium Hydroxide. Hydralazine Hydrochloride is 1-Hydrazinophthalazine monohydrochloride, and its structural formula is:
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 275°C, with decomposition, and has a molecular weight of 196.64.
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