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Acetylsalicylic Acid

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

In the US, Acetylsalicylic Acid is a member of the following drug classes: platelet aggregation inhibitors, salicylates and is used to treat Angina, Angina Pectoris Prophylaxis, Ankylosing Spondylitis, Antiphospholipid Syndrome, Aseptic Necrosis, Back Pain, Fever, Heart Attack, Ischemic Stroke, Ischemic Stroke - Prophylaxis, Juvenile Rheumatoid Arthritis, Kawasaki Disease, Myocardial Infarction - Prophylaxis, Niacin Flush, Osteoarthritis, Pain, Prevention of Thromboembolism in Atrial Fibrillation, Prosthetic Heart Valves - Thrombosis Prophylaxis, Prosthetic Heart Valves - Mechanical Valves - Thrombosis Prophylaxis, Revascularization Procedures - Prophylaxis, Rheumatic Fever, Rheumatoid Arthritis, Sciatica, Spondyloarthritis, Systemic Lupus Erythematosus, Thromboembolic Stroke Prophylaxis and Transient Ischemic Attack.


Ph. Eur.

ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Analgesic, antipyretic and anti-inflammatory agent

Non-steroidal anti-inflammatory drug, NSAID

Antiplatelet agent: Irreversible cyclo-oxygenase inhibitor

Chemical Names

2-Acetoxybenzoic acid (Ph. Eur.)

Benzoic acid, 2-(acetyloxy)- (USP)

Foreign Names

  • Acidum acetylsalicylicum (Latin)
  • Acetylsalicylsäure (German)
  • Acide acétylsalicylique (French)
  • Ácido acetylsalicílico (Spanish)

Generic Names

  • Acide acétylsalicylique (OS: DCF)
  • Aspirin (OS: BAN, JAN)
  • 4-10-00-00138 (IS: Beilstein)
  • ASA (IS)
  • ASS (IS)
  • BRN 0779271 (IS)
  • UNII-R16CO5Y76E (IS)
  • Acetylsalicylic Acid (PH: Ph. Int. 4)
  • Acetylsalicylic acid (PH: Ph. Eur. 8)
  • Acétylsalicylique (acide) (PH: Ph. Eur. 8)
  • Acetylsalicylsäure (PH: Ph. Eur. 8)
  • Acidum acetylsalicylicum (PH: Ph. Eur. 8, Ph. Int. 4)
  • Aspirin (PH: BP 2016, JP XVI, USP 38)
  • Aspirin Aluminum (OS: JAN)
  • Aspirin Aluminium (IS)
  • UNII-E33TS05V6B (IS)
  • Aspirin Aluminum (PH: JP XVI)
  • Aspirin DL-Lysine (OS: JAN)
  • Aspirin Lysine (OS: BANM)
  • DL-Lysin $IO$R-acetylsalicylat (IS)
  • DL-Lysinmono (IS: acetylsalicylat)
  • DL-Lysine (Acétylsalicylate de) (PH: Ph. Franç. 11)

Brand Names


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Ph. Eur.European Pharmacopoeia
USPPharmacopoeia of the United States

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.