Lorazepam 2mg/1ml solution for injection cartridges
Requires a prescription from a doctor or prescriber
Lorazepam is a short-acting and rapidly cleared benzodiazepine used commonly as a sedative and anxiolytic.[A957] It was developed by DJ Richards, presented and marketed initially by Wyeth Pharmaceuticals in the USA in 1977.
Minimal controls; includes benzodiazepines and anabolic steroids
Legal requirements and restrictions
Benzodiazepines and similar medicines. Subject to minimal controlled drug requirements.
Legal requirements
- Prescriptions valid for 28 days
- No controlled drugs register required
- No safe custody requirements
- Record keeping requirements for imports/exports
Other medicines in this category
Safety information for pregnancy and breastfeeding
Pregnancy
Always consult your doctor or midwife before taking any medicine during pregnancy or while breastfeeding. Source: DrugBank (CC BY-NC 4.0).
Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
Official medicine documents
Safety monitoring data
Yellow Card reports
The MHRA Yellow Card scheme collects reports of suspected side effects from healthcare professionals and patients. View the Drug Analysis Profile (iDAP) for real-world adverse reaction data.
View Drug Analysis Profile
Suspected adverse reactions reported for Lorazepam
Browse all iDAP reports
Interactive Drug Analysis Profiles for all medicines
Report a side effect
Submit a Yellow Card report to the MHRA
Data from the MHRA Yellow Card scheme. A reported reaction does not necessarily mean the medicine caused it. Contains public sector information licensed under the Open Government Licence v3.0.
EudraVigilance
The European Medicines Agency (EMA) collects suspected adverse reaction reports from across the EU/EEA through the EudraVigilance system. Search for safety data on this medicine.
View EudraVigilance report
Suspected adverse reactions reported for Lorazepam
About EudraVigilance
Learn about EU pharmacovigilance and safety monitoring
EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
1 branded products available
Therapeutically similar medicines
Similarity based on WHO Anatomical Therapeutic Chemical (ATC) classification and NHS BNF section grouping. Source data: NHS dm+d via TRUD (OGL v3.0), WHO ATC/DDD Index.
Clinical guidelines and formulary information
British National Formulary
Lorazepam
Source: British National Formulary, NICE. Joint Formulary Committee. Contains public sector information licensed under the Open Government Licence v3.0.
NICE clinical guidance(6)
Alcohol-use disorders: diagnosis and management of physical complications (CG100)
Violence and aggression: short-term management in mental health, health and community settings (NG10)
Medicines associated with dependence or withdrawal symptoms: safe prescribing and withdrawal management for adults (NG215)
End of life care for infants, children and young people with life-limiting conditions: planning and management (NG61)
Alcohol-use disorders: diagnosis, assessment and management of harmful drinking (high-risk drinking) and alcohol dependence (CG115)
Epilepsies in children, young people and adults (NG217)
Source: National Institute for Health and Care Excellence (NICE). Contains public sector information licensed under the Open Government Licence v3.0.
Check stock at pharmacies and supply information
Pharmacy stock checkers
Search for this medicine at major UK pharmacy chains. These links open the retailer's own website — results depend on their current online catalogue.
Supply & product information
Official product databases and supply status monitoring
Pharmacy links redirect to the retailer's own search and do not represent real-time stock levels. emc (electronic medicines compendium) is operated by Datapharm Ltd. Shortage information sourced from NHS Specialist Pharmacy Service (SPS), sps.nhs.uk.
Codes for healthcare professionals and prescribing systems
These codes are used by healthcare IT systems and prescribers to identify this medicine.
NHS UK identifiers
Browse tools
SNOMED CT and dm+d codes from NHS TRUD (Technology Reference data Update Distribution), licensed under the Open Government Licence v3.0. BNF codes from NHS Business Services Authority (NHSBSA). ATC codes from the WHO Collaborating Centre for Drug Statistics Methodology (whocc.no).
Active and completed clinical studies from ClinicalTrials.gov
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine (NLM), National Institutes of Health (NIH). Data accessed via ClinicalTrials.gov API v2. Trial information is provided for research purposes and does not constitute medical advice.
Pharmacology and chemical data from DrugBank
Key facts
Drug status
Approved
Major interactions
2 found
Half-life
14 hours
Mechanism
Lorazepam allosterically binds on the benzodiazepine receptors in the post-synap…
Food interactions
3 warnings
Human targets
3 targets
Data: DrugBank · CC BY-NC 4.0
Pharmacokinetics at a glance
Absorption
90%
Half-life
14 hours
Protein binding
85%
Volume of distribution
1.3 L/kg
Metabolism
Elimination
2 mg
Clearance
5.8 ml
[A173914]
Pharmacokinetic data: DrugBank · CC BY-NC 4.0
Some off-label indications of lorazepam include rapid tranquilization of an agitated patient, alcohol withdrawal delirium, alcohol withdrawal syndrome, muscle spasms, insomnia, panic disorder, delirium, chemotherapy-associated anticipatory nausea and vomiting, and psychogenic catatonia.T385
Known interactions with other medications. Always consult a healthcare professional.
Showing 50 of 1417 interactions
[L6403]
When an overdose administration is registered, signs of CNS and respiratory depression are rapidly observed. An overdose stage can result in profound sedation, deep respiratory depression, coma, and death.T385 When overdose is observed, it is recommended to administer emergency symptomatic medical support with attention to produce an increase in lorazepam elimination.T388
There is no evidence of carcinogenicity nor mutagenicity. At doses higher than 40 mg/kg there is evidence of fetal resorption and increase in fetal loss.[FDA label]
According to the binding site of lorazepam, we can observe different activities as the binding in the amygdala is known to help mainly in anxiety disorders while the binding in the cerebral cortex helps in seizure disorders.T385
The effect of lorazepam seems to be very compartmental which was observed with a different generation of sleepiness and a dizziness effect.[A173920]
How the body processes this drug — absorption, distribution, metabolism, and elimination
[A251115]
The absorption half-life was calculated to be 55 minutes for oral doses and 15 minutes for sublingual doses.
[A251115]
[A173914]
Proteins and enzymes this drug interacts with in the body
PMID:10449790 PMID:16412217
GABA-gated chloride channels, also named GABA(A) receptors (GABAAR), consist of five subunits arranged around a central pore and contain GABA active binding site(s) located at the alpha and beta subunit interfaces (By similarity). When activated by GABA, GABAARs selectively allow the flow of chloride anions across the cell membrane down their electrochemical gradient PMID:10449790 PMID:16412217
Was initially identified as peripheral-type benzodiazepine receptor; can also bind isoquinoline carboxamides PMID:1847678
Enzymes involved in drug metabolism — important for understanding drug interactions
ATC N05BA56
ATC N05BA06
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Show
Chemical identifiers
CAS, UNII, InChI Key and database cross-references
Linked compound data from DrugBank Open Data (CC BY-NC 4.0)
Lorazepam
Additional database identifiers
Drugs Product Database (DPD)
2300
ChemSpider
3821
BindingDB
50292627
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4075
GenAtlas
GABRA1
GeneCards
GABRA1
GenBank Gene Database
X13584
GenBank Protein Database
31631
Guide to Pharmacology
404
UniProt Accession
GBRA1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4076
GenAtlas
GABRA2
GeneCards
GABRA2
GenBank Gene Database
S62907
GenBank Protein Database
386422
Guide to Pharmacology
405
UniProt Accession
GBRA2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4077
GenAtlas
GABRA3
GeneCards
GABRA3
GenBank Gene Database
S62908
GenBank Protein Database
386424
Guide to Pharmacology
406
UniProt Accession
GBRA3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4078
GenAtlas
GABRA4
GeneCards
GABRA4
GenBank Gene Database
U30461
GenBank Protein Database
905393
Guide to Pharmacology
407
UniProt Accession
GBRA4_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4079
GenAtlas
GABRA5
GeneCards
GABRA5
GenBank Gene Database
L08485
GenBank Protein Database
182916
Guide to Pharmacology
408
UniProt Accession
GBRA5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4080
GenAtlas
GABRA6
GeneCards
GABRA6
GenBank Gene Database
S81944
GenBank Protein Database
1470364
Guide to Pharmacology
409
UniProt Accession
GBRA6_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4081
GenAtlas
GABRB1
GeneCards
GABRB1
GenBank Gene Database
X14767
GenBank Protein Database
31635
UniProt Accession
GBRB1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4082
GenAtlas
GABRB2
GeneCards
GABRB2
GenBank Gene Database
S67368
GenBank Protein Database
455946
UniProt Accession
GBRB2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4083
GenAtlas
GABRB3
GeneCards
GABRB3
GenBank Gene Database
M82919
GenBank Protein Database
182925
Guide to Pharmacology
412
UniProt Accession
GBRB3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4084
GeneCards
GABRD
GenBank Gene Database
AF016917
GenBank Protein Database
2388693
UniProt Accession
GBRD_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4085
GeneCards
GABRE
GenBank Gene Database
U66661
GenBank Protein Database
1857126
UniProt Accession
GBRE_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4086
GeneCards
GABRG1
GenBank Gene Database
AK122845
GenBank Protein Database
193783776
UniProt Accession
GBRG1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4087
GeneCards
GABRG2
GenBank Gene Database
X15376
GenBank Protein Database
31637
UniProt Accession
GBRG2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4088
GeneCards
GABRG3
GenBank Gene Database
S82769
GenBank Protein Database
1754749
UniProt Accession
GBRG3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4089
GeneCards
GABRP
GenBank Gene Database
U95367
GenBank Protein Database
2197001
UniProt Accession
GBRP_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:14454
GeneCards
GABRQ
GenBank Gene Database
AF189259
GenBank Protein Database
7861736
UniProt Accession
GBRT_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4075
GenAtlas
GABRA1
GeneCards
GABRA1
GenBank Gene Database
X13584
GenBank Protein Database
31631
Guide to Pharmacology
404
UniProt Accession
GBRA1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4076
GenAtlas
GABRA2
GeneCards
GABRA2
GenBank Gene Database
S62907
GenBank Protein Database
386422
Guide to Pharmacology
405
UniProt Accession
GBRA2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4077
GenAtlas
GABRA3
GeneCards
GABRA3
GenBank Gene Database
S62908
GenBank Protein Database
386424
Guide to Pharmacology
406
UniProt Accession
GBRA3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4079
GenAtlas
GABRA5
GeneCards
GABRA5
GenBank Gene Database
L08485
GenBank Protein Database
182916
Guide to Pharmacology
408
UniProt Accession
GBRA5_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4086
GeneCards
GABRG1
GenBank Gene Database
AK122845
GenBank Protein Database
193783776
UniProt Accession
GBRG1_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4087
GeneCards
GABRG2
GenBank Gene Database
X15376
GenBank Protein Database
31637
UniProt Accession
GBRG2_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:4088
GeneCards
GABRG3
GenBank Gene Database
S82769
GenBank Protein Database
1754749
UniProt Accession
GBRG3_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:1158
GenAtlas
TSPO
GeneCards
TSPO
GenBank Gene Database
M36035
GenBank Protein Database
306883
Guide to Pharmacology
2879
UniProt Accession
TSPO_HUMAN
HUGO Gene Nomenclature Committee (HGNC)
HGNC:12546
GeneCards
UGT2B15
UniProt Accession
UDB15_HUMAN
International reference pricing
Reference pricing from DrugBank. Prices are indicative and may not reflect current UK costs.
Source: DrugBank. Used under CC BY-NC 4.0 academic licence for non-commercial purposes.
Patent information
1 active patent
Source: DrugBank · CC BY-NC 4.0. Patent data sourced from national patent offices. Expiry dates may not reflect extensions, regulatory exclusivity periods, or legal challenges.
DrugBank citations
If you use DrugBank data in your research, please cite the following publications: