FDA label
What is hydralazine used for?
The FDA-approved uses of hydralazine, quoted from the Indications and Usage section of its DailyMed label.
Source: DailyMed SPL label file dated 2026-10-23. Publisher page
The FDA label says: “Essential hypertension, alone or as an adjunct.”
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Hydralazine Hydrochloride, tablet
Indications and Usage, quoted from the label by Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. (ANDA040858). Cross-references to other label sections are left out.
Essential hypertension, alone or as an adjunct.
Source: DailyMed label, set id 669532c9-ba15-4f4b-95a8-13782deb3521, version 3, effective April 3, 2026. NDC 23155-832, one of 114 listings for this product.
Hydralazine Hydrochloride, injection
Indications and Usage, quoted from the label by Fresenius Kabi USA, LLC (ANDA040388). Cross-references to other label sections are left out.
Severe essential hypertension when the drug cannot be given orally or when there is an urgent need to lower blood pressure.
Source: DailyMed label, set id 8223c44a-73a9-4da5-a468-d1d8bdb0bbd6, version 13, effective October 7, 2026. NDC 63323-614, one of 19 listings for this product.
Questions
What is hydralazine used for?
The FDA label says: “Essential hypertension, alone or as an adjunct.”
What drug class is hydralazine?
FDA lists hydralazine in the Arteriolar Vasodilator established pharmacologic class.
Does this page cover off-label uses or dosing?
No. This page shows only the Indications and Usage section of the FDA label. Ask a pharmacist or prescriber about dosing.