Back هيدرالازين Arabic هیدرالازین AZB Hydralasin Welsh Hydralazin German Hidralazina Spanish Hidralazina Basque هیدرالازین Persian Hydralatsiini Finnish Hydralazine French Hidralazin Croatian

Hydralazine

Not to be confused with hydrazine.

Hydralazine
Skeletal formula of hydralazine
Ball-and-stick model of the hydralazine molecule
Clinical data
Trade namesApresoline, BiDil, others
AHFS/Drugs.comMonograph
MedlinePlusa682246
License data
Pregnancy
category
  • AU: C
Routes of
administration		By mouth, intravenous
ATC code
Legal status
Legal status
Pharmacokinetic data
Bioavailability26–50%
Protein binding85–90%
MetabolismLiver
Onset of action5 to 30 min[2]
Elimination half-life2–8 hours, 7–16 hours (renal impairment)
Duration of action2 to 6 hrs[2]
ExcretionUrine
Identifiers
  • 1-hydrazinylphthalazine
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.001.528 Edit this at Wikidata
Chemical and physical data
FormulaC8H8N4
Molar mass160.180 g·mol−1
3D model (JSmol)
  • NNc1c2ccccc2cnn1
  • InChI=1S/C8H8N4/c9-11-8-7-4-2-1-3-6(7)5-10-12-8/h1-5H,9H2,(H,11,12) checkY
  • Key:RPTUSVTUFVMDQK-UHFFFAOYSA-N checkY
  (verify)

Hydralazine, sold under the brand name Apresoline among others, is a medication used to treat high blood pressure and heart failure.[2] This includes high blood pressure in pregnancy and very high blood pressure resulting in symptoms.[3] It has been found to be particularly useful in heart failure, together with isosorbide dinitrate, for treatment of people of African descent.[2] It is given by mouth or by injection into a vein.[3] Effects usually begin around 15 minutes and last up to six hours.[2]

Common side effects include headache and fast heart rate.[2] It is not recommended in people with coronary artery disease or in those with rheumatic heart disease that affects the mitral valve.[2] In those with kidney disease a low dose is recommended.[3] Hydralazine is in the vasodilator family of medications, so it is believed to work by causing the dilation of blood vessels.[2]

Hydralazine was discovered while scientists at Ciba were looking for a treatment for malaria.[4] It was patented in 1949.[5] It is on the World Health Organization's List of Essential Medicines.[6] In 2021, it was the 106th most commonly prescribed medication in the United States, with more than 6 million prescriptions.[7][8]

  1. ^ "Prescription medicines: registration of new generic medicines and biosimilar medicines, 2017". Therapeutic Goods Administration (TGA). 21 June 2022. Retrieved 30 March 2024.
  2. ^ a b c d e f g h "Hydralazine Hydrochloride". The American Society of Health-System Pharmacists. Archived from the original on 21 December 2016. Retrieved 8 December 2016.
  3. ^ a b c World Health Organization (2009). Stuart MC, Kouimtzi M, Hill SR (eds.). WHO Model Formulary 2008. World Health Organization. p. 280. hdl:10665/44053. ISBN 9789241547659.
  4. ^ Wermuth CG (2 May 2011). The Practice of Medicinal Chemistry. Academic Press. p. 12. ISBN 9780080568775. Archived from the original on 26 February 2017.
  5. ^ Progress in Drug Research/Fortschritte der Arzneimittelforschung/Progrés des recherches pharmaceutiques. Birkhäuser. 2013. p. 206. ISBN 9783034870948. Archived from the original on 20 December 2016.
  6. ^ World Health Organization (2019). World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
  7. ^ "The Top 300 of 2021". ClinCalc. Archived from the original on 15 January 2024. Retrieved 14 January 2024.
  8. ^ "Hydralazine - Drug Usage Statistics". ClinCalc. Retrieved 14 January 2024.

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