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Do direct vasodilators have any side effects?

Donna Hill Howes, RN
Family Practitioner

Direct vasodilators can cause extremely low blood pressure. This can result in dizziness, light-headedness, or fainting. Other side effects may include rapid heartbeat, chest pain, weight gain, and swelling of the legs and ankles. Minoxidil can cause serious heart problems.

Side effects of hydralazine also may include loss of appetite, nausea, vomiting, diarrhea, fever, and joint pain. Side effects of minoxidil may include thickening of body hair, changes in skin pigmentation, breast enlargement in men, short menstrual cycles in women, and worsening of heart failure.

This answer was adapted from Sharecare's award-winning AskMD app. Start a consultation now to find out what's causing your symptoms, learn how to manage a condition, or find a doctor.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.