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What is Hydralazine?

Hydralazine is a prescription medication that is used to treat high blood pressure. Hydralazine is a vasodilator medication and works by relaxing the muscles in the blood vessels and causing them to widen so that blood can flow more easily.

Make sure to always read the patient information and instructions before using this medication. Always follow your doctor’s directions.

  • Apresoline may be taken with or without food.
  • Take this medication at the same time each day.
  • Continue taking this medication regularly, even when you feel well.
  • You may need regular blood and blood pressure tests while taking this medication.


Tell your doctor and pharmacist:

  • About your drug and other allergies.
  • If you take any other prescription or over-the-counter medications.
  • Your medical history particularly of coronary artery disease, rheumatic heart disease, kidney disease, angina, stroke or systemic lupus erythematosus.
  • If you are pregnant or planning pregnancy.

You should also know:

  • Hydralazine should not be used by anyone younger than 18.

Side Effects of Hydralazine

Common side effects of hydralazine include but are not limited to:

  • Headaches.
  • Fast heart rate or chest pain.
  • Nausea or vomiting.
  • Loss of appetite.
  • Diarrhea.

Get medical help if you have any of the following side effects of hydralazine:

  • Fast or pounding heartbeats.
  • Chest pain or pressure or a pain that spreads to your jaw or shoulder.
  • Numbness or tingling.
  • Little, no, painful or difficult urination.
  • Feeling lightheaded or like you might pass out.
  • Burning pain in the hands or feet.
  • Signs of lupus-like-syndrome including chest pain, joint pain, fever with swelling, swollen glands, muscle aches, vomiting, patchy skin color, or unusual thoughts or behavior.
  • Symptoms of an allergic reaction such as difficulty breathing, hives, or swelling in your face, lips, or throat.


What should I do if I miss a dose of hydralazine?

If you miss a dose of hydralazine, you should take it as soon as you remember. However, if it is almost time for your next dose, then skip your missed dose.

What is the strength of Hydralazine

Hydralazine is available in a strength of 10mg, 25mg, and 50mg.

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