Hydralazine

Directly relaxes the smooth muscles of the arteries, causing them to dilate and lowering blood pressure.

Dosage by Body Weight

Pediatric oral dose: 0.75 mg/kg/day divided into 2-4 doses. Titrate carefully.

  1. Body Weight
    10-20 kg
    Dose
    2.5 mg to 5 mg
    Frequency
    Three to four times daily
    Tracking Notes
    May cause rapid heart rate (tachycardia).

Formulation

TabletInjection

Purpose

Vasodilator used for severe hypertension and hypertensive emergencies.

Generic Name

Hydralazine Hydrochloride

Branded Drug Names

Hydralazine is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

NifedipineAmlodipine

Safety Advice

Alcohol

CAUTION

Hydralazine: Alcohol can increase dizziness, low blood pressure, dehydration, or heart rhythm symptoms. Avoid or limit alcohol.

Pregnancy

CAUTION

Hydralazine: Use in pregnancy only when prescribed; some heart or blood pressure medicines are not suitable during pregnancy.

Breast Feeding

SAFE IF PRESCRIBED

Hydralazine: Use while breastfeeding only with healthcare provider guidance, as infant monitoring may be needed.

Driving

CAUTION

Hydralazine: May cause dizziness, faintness, tiredness, or blurred vision, especially when starting or changing dose. Avoid driving if affected.

Liver

CAUTION

Hydralazine: Liver disease may alter medicine handling and increase side effects. Use with medical supervision.

Kidney

CAUTION

Hydralazine: Kidney function and electrolytes may need monitoring, especially with diuretics, ACE inhibitors, ARBs, or digoxin.

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.