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In some countries, this medicine may only be approved for veterinary use.

In the US, Acetylcysteine (acetylcysteine systemic) is a member of the following drug classes: antidotes, mucolytics and is used to treat Acetaminophen Overdose, Diagnostic Bronchograms and Expectoration.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories


Mucolytic agent

Chemical Names

N-Acetylcysteine (WHO)

L-Cysteine, N-acetyl- (USAN)

Foreign Names

Generic Names

  • Acetylcysteine (OS: BAN, USAN, JAN)
  • Acétylcystéine (OS: DCF)
  • NAC-TB (IS)
  • Acetylcystein (PH: Ph. Eur. 9)
  • Acetylcysteine (PH: BP 2018, JP XVII, Ph. Eur. 9, USP 41)
  • Acétylcystéine (PH: Ph. Eur. 9)
  • Acetylcysteinum (PH: Ph. Eur. 9)

Brand Names


BANBritish Approved Name
DCFDénomination Commune Française
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name
WHOWorld 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.