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In the US, Lorazepam (lorazepam systemic) is a member of the following drug classes: benzodiazepine anticonvulsants, benzodiazepines, miscellaneous antiemetics and is used to treat Anxiety, Borderline Personality Disorder, Cervical Dystonia, Dysautonomia, ICU Agitation, Insomnia, Light Anesthesia, Nausea/Vomiting, Nausea/Vomiting - Chemotherapy Induced, Panic Disorder, Sedation and Status Epilepticus.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Antiemetic agent

Anxiolytic agent

Antiepileptic agent

Benzodiazepine derivative

Agent for premedication

Hypnotic agent

Chemical Names

(RS)-7-Chlor-5-(2-chlorphenyl)-2,3-dihydro-3-hydroxy-1H-1,4-benzodiazepin-2-on (IUPAC)


2H-1,4-Benzodiazepin-2-one, 7-chloro-5-(2-chlorophenyl)-1,3-dihydro-3-hydroxy-

7-Chloro-5-(o-chlorophenyl)-1,3-dihydro-3-hydroxy-2H-1,4-benzodiazepin-2-one (WHO)

Foreign Names

  • Lorazepamum (Latin)
  • Lorazepam (German)
  • Lorazépam (French)
  • Lorazepam (Spanish)

Generic Names

  • Lorazepam (OS: BAN, DCIT, USAN, JAN)
  • Lorazépam (OS: DCF)
  • Anxiedin (IS)
  • Azurogen (IS)
  • Bonatranquan (IS)
  • BRN 0759084 (IS)
  • CB 8133 (IS)
  • Delormetazepam (IS)
  • Demethyllormetazepam (IS)
  • Lorazin (IS)
  • Lorazon (IS)
  • Lorenin (IS)
  • Norlormetazepam (IS)
  • Novhepar (IS)
  • Novolorazem (IS)
  • o-Chlorooxazepam (IS)
  • Ro 7-8408 (IS)
  • Sinestron (IS)
  • Wy 4036 (IS: Wyeth)
  • Lorazepam (PH: BP 2016, JP XVI, Ph. Eur. 8, USP 38)
  • Lorazépam (PH: Ph. Eur. 8)
  • Lorazepamum (PH: Ph. Eur. 8)
  • Lorazepam trimethylacetate (IS)
  • Pivazepam (IS)

Brand Names


BANBritish Approved Name
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
IUPACInternational Union of Pure and Applied Chemistry
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.