Drug reference

hydralazine

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Drug class

Cardiovascular (Vasodilators)

Mechanism of action

Direct vasodilator; dilates arterioles with little effect on vein; decreases systemic resistance, which subsequently decreases blood pressure.

Common side effects

  • Palpitations
  • Headache
  • Hypotension
  • Conjunctivitis
  • Tachycardia
  • Peripheral edema

Contraindications

  • Hypersensitivity to hydralazine Coronary artery disease Mitral valve rheumatic heart disease

Related conditions

Frequently asked questions

What drug class is hydralazine?

hydralazine belongs to: Cardiovascular.

How does hydralazine work?

Direct vasodilator; dilates arterioles with little effect on vein; decreases systemic resistance, which subsequently decreases blood pressure.

What are the common side effects of hydralazine?

Palpitations, Headache, Hypotension, Conjunctivitis, Tachycardia, Peripheral edema

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