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General Information on Hydralazine

Generic Name : Hydralazine

Pronunciation : hye dral' a zeen

Latest prescription information about Hydralazine. Learn how to pronounce the drug's name, its indications, dosage, how to take, when to take, when not to take, side effects, special precautions, its storage instructions and warnings if any when taken during pregnancy. Also listed are the International and Indian trade name(s) of the drug and its price list.
ICD Code : Y52.3 | Therapeutic Classification : Vasodilators

Trade Names/Brand Names of Hydralazine

India : 

International : 

Apresoline, Dralzine

Why is Hydralazine Prescribed? (Indications)

This medication is a smooth muscle relaxant, prescribed for essential hypertension. This medication lowers the blood pressure.  

When should Hydralazine not to be taken? (Contraindications)


What is the dosage of Hydralazine?

Initial: The recommended dose is 10 mg four times daily for the first 2-4 days, increase to 25 mg four times daily for the balance of the first week.

How should Hydralazine be taken?

It comes as a tablet to take by mouth, as directed by your physician.

What are the warnings and precautions for Hydralazine?

Caution should be exercised in patients with history of heart disease, kidney or liver disease, heart attack, any allergy, who are taking other medications, children, during pregnancy and breastfeeding.

It may cause dizziness, do not drive a car or operate machinery while taking this medication.

Avoid alcohol consumption.

Monitor complete blood counts, blood pressure and antinuclear antibody titers while taking this medication.

What are the side effects of Hydralazine?

   Common : Headache, loss of appetite, nausea, vomiting, diarrhea, palpitations, fast heart rate and chest pain.
  Less Frequent
   Gastrointestinal : Constipation and intestinal obstruction.
   Heart : Low blood pressure and swelling.
   Respiratory : Difficulty in breathing.
   Central Nervous System : Tingling, numbness, dizziness, tremors, muscle cramps, depression, disorientation and anxiety.
   Genitourinary : Difficulty in urination.
   Blood : Anemia and decrease in white blood cells.
   Hypersensitivity : Rash, hives, itching, fever, chills, joint pain and eosinophilia.
   Miscellaneous : Nasal congestion, flushing, lacrimation and eye inflammation.

What are the other precautions for Hydralazine?

Avoid excess dosage.

What are the storage conditions for Hydralazine?

Store it at room temperature, and in an airtight container.


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padmininair, India

My mother has undergone two stents in her rightside of heart in the interediary area and after that whole lot of problems have cropped up. She is having problem in her kidney function for that Dr. Advised Dyalisis. Her BP is very high and fluctuating from 180 to 220 and as on date status is that lots of tests have been done like Ultrasound, CT Scan, Liver Function Lung Function and report of everything has come OK, now the Doctor is suggesting medicine Apresoline 20 mg. [Hydralazine: chemical Name] to lower BP. As per Dr. one renal doppler needs to be done as he suspects that there is some problem in the kidney area. But my mom is very drowsy due to medications and hence Renal Doppler done two times not successful as she is not able to hold breath consciously due to drowsiness. Please advise me what is the best medication to be followed for her condition. Is renal Doppler possible in some other way?..pls. guide me.

Nancy Dave, United States

Should 25mg Hydralazine 3x day be taken with 40mg Furosamide x2 day
as well as Clonidine HCL 4x day?
This seems like more than necessary
diuretics for 72yr.old woman that
isn't storing excessive water, but
has Labile Hypertention. Please advise. Thanx

Pradeep pathak, India

Dose of Hydralazine Injection not mentioned? Please email me

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