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



CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Anxiolytic agent

Antiepileptic agent

Chemical Name

1-(4-chlorophenyl)-4-(morpholin-4-yl)-1,5-dihydro-2H-imidazol-2-one (WHO)

Foreign Names

  • Imepitoinum (Latin)
  • Imepitoin (German)
  • Imépitoïne (French)
  • Imepitoina (Spanish)

Generic Names

  • AWD 131-138 (IS)
  • UNII-19V39682LI (IS)

Brand Names

  • Pexion (veterinary use)
    Boehringer Ingelheim, Switzerland; Boehringer Ingelheim Animal, Netherlands; Boehringer Ingelheim Santé Animale, France; Boehringer Ingelheim Vet, Italy; Boehringer Ingelheim Vet, Norway; Boehringer Ingelheim Vetmedica, Austria; Boehringer Ingelheim Vetmedica, United Kingdom; Boehringer Ingelheim Vetmedica, Sweden; Boehrvet BI-Vetmedica, Germany; Vetcare, Finland
  • Pexion Chiens (veterinary use)
    Boehringer Ingelheim Animal Health, Belgium


ISInofficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
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.