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In the US, Phentolamine (phentolamine systemic) is a member of the drug class miscellaneous cardiovascular agents and is used to treat Dermal Necrosis - Treatment, Pheochromocytoma, Pheochromocytoma Diagnosis and Reversal of Anesthesia.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Antihypertensive agent


α-adrenoceptor antagonist (alpha-blocker)

Treatment of erectile dysfunction

Chemical Name

Phenol, 3-[[(4,5-dihydro-1H-imidazol-2-yl)metyl](4-metylphenyl)amino]-

Foreign Names

  • Phentolaminum (Latin)
  • Phentolamin (German)
  • Phentolamine (French)
  • Fentolamina (Spanish)

Generic Names

  • Fentolamina (OS: DCIT)
  • Phentolamine (OS: BAN, DCF)
  • Phentolamine Mesilate (OS: JAN, BANM)
  • Phentolamine Mesylate (IS)
  • Phentolamine methanesulfonate (IS)
  • Vesomax (IS)
  • Phenolamine (mésilate de) (PH: Ph. Eur. 8)
  • Phentolamine mesilate (PH: Ph. Eur. 8)
  • Phentolamine Mesilate (PH: BP 2016)
  • Phentolamine Mesylate (PH: USP 38)
  • Phentolamini mesilas (PH: Ph. Eur. 8)
  • Phentolamini mesylas (PH: Ph. Int. 2)
  • Phentolaminmesilat (PH: Ph. Eur. 8)

Brand Names


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.