Lorazepam is a short-acting depressant of the benzodiazepine class. First marketed by Wyeth Pharmaceuticals in the United States in 1977, it is prescribed for the short-term treatment of anxiety, insomnia, acute seizures, and sedation of hospitalized patients. It is characterized by its relatively rapid clearance compared to many other benzodiazepines. Like all benzodiazepines, lorazepam carries a significant risk of physical dependence and habit formation with repeated use.
Loratsepaami molecular structure diagram from the DrugsPRO substance library.
Also known as: Tavor, Ativan, Temesta, Orfidal, Lorsilan, Loreev XR, O-Chloroxazepam
Classification
Chemical: Benzodiazepine
Chemical: Medicine
Psychoactive: Depressant
Tag: Anxiolytic
Tag: Common
Tag: GABAergic
Tag: Habit-Forming
Tag: Muscle Relaxant
Tag: Sedative
Effects
Sedation
Muscle Relaxation
Respiratory Depression
Seizure Suppression
Anxiolytic
Sedative
Anxiety Suppression
Thought Deceleration
Information Processing Suppression
Euphoria
Amnesia
Compulsive Redosing
Disinhibition
Open Eye Visuals
Visual Fragmentation
Dulled Perception
Routes of Administration
Oral
Dosage
Heavy: 4 - 7.5 mg
Light: 0.1 – 0.5 mg
Common: 0.5 – 1.5 mg
Strong: 1.5 – 2 mg
Threshold: 0.25 mg
Duration
Onset: 0.08-0.5 h
Peak: 1-3 h
Offset: 6-12 h
After Effects: 12-24 h
Total Duration: 8-16 h
Intramuscular
Dosage
Common: 0.5-1 mg
Light: 0.25-0.5 mg
Strong: 1-2 mg
Duration
No data available for this section yet.
Harm Reduction
Check interactions before mixing substances, pay attention to dose spacing and hydration, and treat all dosage guidance as approximate rather than guaranteed safe.
Sources
Substance data is aggregated from the following public harm-reduction and reference sources.
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Lorazepam - DrugsPRO aineopas
Lorazepam: Lorazepam is a short-acting depressant of the benzodiazepine class. First marketed by Wyeth Pharmaceuticals in the United States in 1977, it is prescribed for the short-term treatment of anxiety, insomnia, acute seizures, and sedation of hospitalized patients. It is characterized by its r