Hydralazine belongs to a group of medicines used to treat high blood pressure known as vasodilator.

What is this medication​​ used for

Hydralazine belongs to a group of medicine used to treat high blood pressure known as vasodilator.​

Vasodilators act directly on blood vessels, causing them to widen. This action allows blood to flow through more easily and hence lowers your blood pressure.


Dosage and How​ to Use

  • Do not stop taking your medicine without checking your doctors. 
  • If you miss a dose, take the missed dose as soon as you remember. If it is almost time for your next dose, take only the usual dose. Do not double your dose or use extra medicine to make up for the missed dose.


Side Effects, Precautions, Contraindi​​cation

What are the possible side effects of the me​​​dicine?

This medicine may cause an increase in heart rate, water retention such as leg swelling, flushing and headaches. This medicine may rarely cause skin rash, joint pain and fever.

How do I know if I am allergic to t​​his medicine?

The symptoms of a drug allergy include one or more of the following: 

  • Swollen face/eyes/lips 
  • Difficulty in breathing 
  • Itchy skin rashes over your whole body

If you experience any of these symptoms, you should stop your medicine immediately and see your doctor.

What precautions should I follow ​​when taking the medicine?

This medicine may cause your blood pressure to fall too much when you are taking it for the first time. You may experience dizziness, light-headedness or fainting, especially when you get up from a lying or sitting position. Getting up slowly may help and these symptoms are usually mild and temporary.

Check with your doctor if these symptoms continue.


Handling and Sto​rage

  • Keep your medicines in the original container or packaging, tightly closed or sealed in a cool and dry place, away from direct sunlight. 
  • Keep the medicine out of reach of children. 
  • Throw away all expired medicines.

This article answers some common questions about this medicine. It does not contain all the available information. It also does not take the place of talking to your doctor or pharmacist.

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