Is there a box warning for hydralazine hydrochloride?

Hydralazine hydrochloride does not carry a boxed warning. Boxed warnings are used to highlight serious risks associated with a medication, often clarifying critical information about potential adverse effects, contraindications, or required monitoring during treatment. In the case of hydralazine, although there are considerations regarding its use—such as the potential for a lupus-like syndrome or other side effects—there is no formal boxed warning indicating a critical risk that healthcare providers must explicitly be aware of. This lack of a boxed warning does not imply that the medication is without risk or side effects, but rather that it does not meet the criteria that would necessitate such a warning to be placed prominently on the label.