Hydralazine is a vasodilator that can relax the blood vessels in your heart and hence increase the blood and oxygen supply to your heart. It can be used to treat high blood pressure and chronic heart failure.
Hydralazine can be taken by mouth as tablets.
If you are using it for high blood pressure, the usual starting dose is 10 mg four times daily.
If you are using it for chronic heart failure, you should take Hydralazine with a long-acting nitrate and start with 25 mg 3-4 times daily.
Hydralazine doses are gradually increased based on your responses. The usual maintenance dose is 50-75 mg 4 times daily.
Common dosing schedule:
You can take Hydralazine with or without food, but keep it consistent as this may affect the amount of drug absorbed.
This schedule is for reference only, adjustments may be made according to individual needs.
Some common medications Hydralazine may interact with:
Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.
In Hong Kong, Hydralazine is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.
For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk
Need more information?
For detailed information about the use of Hydralazine in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.
Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.
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