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Generic Name: hydralazine

It relaxes blood vessels, increasing the blood and oxygen supply to your heart
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What is this medicine?

HYDRALAZINE (hye DRAL a zeen) is a vasodilator. It relaxes blood vessels, increasing the blood and oxygen supply to your heart. This medicine is used to treat high blood pressure.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • blood vessel disease
  • heart disease including angina or history of heart attack
  • kidney disease
  • liver disease
  • systemic lupus erythematosus (SLE)
  • an unusual or allergic reaction to hydralazine, tartrazine dye, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

This medicine is for injection into a muscle or a vein, It is given by a health-care professional in a hospital or clinic setting.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. While this drug may be prescribed for children for selected conditions, precautions do apply.

What if I miss a dose?

This does not apply.

What may interact with this medicine?

  • medicines for high blood pressure
  • medicines for depression

What should I watch for while using this medicine?

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

Do not treat yourself for coughs, colds, or pain while you are taking this medicine without asking your doctor or health care professional for advice. Some ingredients may increase your blood pressure.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • breathing problems
  • chest pain
  • fast, irregular heartbeat
  • fever, chills, or sore throat
  • pain, tingling, numbness in the hands or feet
  • stiff or swollen joints
  • sudden weight gain
  • swelling of the feet or legs
  • swollen lymph glands
  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • diarrhea or constipation
  • headache
  • loss of appetite
  • nausea, vomiting

Where should I keep my medicine?

This drug is given in a hospital or clinic and will not be stored at home.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.


All visitors to AARP.org should seek expert medical care and consult their own physicians for any specific health issues. Read this disclaimer in its entirety.
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Note: This information is not intended to cover all possible uses, precautions, interactions, or adverse effects for this drug. If you have question about the drug(s) you are taking, check with your health care professional.
 
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