Generic Medicine Info
Indications and Dosage
Short-term management of insomnia
Adult: For cases including difficulty in falling asleep and/or frequent nocturnal awakenings: 1 mg once daily at bedtime, may be increased to 1.5-2 mg once daily at bedtime if needed. Max treatment duration: 4 weeks (including tapering off process).
Elderly: Initially, 0.5 mg once daily at bedtime. Max: 1 mg once daily.
Special Patient Group
Debilitated patients: Initially, 0.5 mg once daily at bedtime. Max: 1 mg once daily.
Acute pulmonary insufficiency, severe respiratory insufficiency, myasthenia gravis, phobic or obsessional states, sleep apnoea syndrome; monotherapy use in depression or anxiety associated with depression and chronic psychosis and alcohol intake.
Special Precautions
Patient with personality disorders, depression (particularly if suicidal risk is present), history of psychiatric disorders, and alcohol or drug abuse; chronic pulmonary insufficiency, cerebrovascular disease. Not recommended for long-term use. Avoid abrupt withdrawal. Concomitant use with opioids. Chronic renal or hepatic impairment. Elderly and debilitated patients. Pregnancy and lactation.
Adverse Reactions
Significant: Paradoxical reactions, including hyperactive, aggressive, or suicidal behaviour; rebound insomnia which may be accompanied by other reactions such as restlessness, anxiety, sleep disturbances or mood changes; increased risk of sleep-related activities (e.g. sleep-driving, making phone calls while asleep, cooking and eating food); anterograde amnesia, CNS depression; increased risk of falls leading to severe injury; abuse or physical and psychological dependence.
Eye disorders: Blurred vision.
Gastrointestinal disorders: Nausea.
General disorders and administration site conditions: Ataxia.
Musculoskeletal and connective tissue disorders: Hypotonia.
Nervous system disorders: Headache, dizziness, drowsiness, speech disorder.
Patient Counseling Information
This drug may cause diziness, drowsiness and impaired concentration, if affected, do not drive or operate machinery.
Monitoring Parameters
Monitor respiratory and mental status.
Drug Interactions
Enhanced CNS depressant effects with other hyptonics, anxiolytics/sedatives, antidepressants, antipsychotics, antiepileptic drugs, sedative antihistamines, narcotic analgesics, or anaesthetics. Therapeutic effect may be potentiated by cisapride and other agents acting in the CNS.
Potentially Fatal: Increased risk of profound sedation, respiratory depression and coma when given with opioids.
Food Interaction
Enhanced sedative effects with alcohol.
Mechanism of Action: Loprazolam is an intermediate-acting benzodiazepine that binds to stereospecific benzodiazepine receptors on the postsynaptic GABA neuron at various CNS sites, including limbic system and reticular formation. The enhancement of the GABA inhibitory effect on neuronal excitability results by increased neuronal membrane permeability to chloride ions, leading to hyperpolarisation and stabilisation.
Onset: 0.5-1 hour.
Duration: 10 hours.
Absorption: Bioavailability: 79% ± 10%.
Distribution: Plasma protein binding: 80%.
Metabolism: Metabolised in the liver to form piperazine-N-oxide (active metabolite).
Excretion: Via faeces (52.5%); urine (38.8%). Elimination half-life: 3.5-12.8 hours.
Chemical Structure

Chemical Structure Image

Source: National Center for Biotechnology Information. PubChem Compound Summary for CID 3033860, Loprazolam. https://pubchem.ncbi.nlm.nih.gov/compound/Loprazolam. Accessed Nov. 25, 2022.

Store below 25°C. Protect from light and moisture.
MIMS Class
Hypnotics & Sedatives
ATC Classification
N05CD11 - loprazolam ; Belongs to the class of benzodiazepine derivatives. Used as hypnotics and sedatives.
Anon. Loprazolam. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. https://online.lexi.com. Accessed 05/10/2022.

Buckingham R (ed). Loprazolam Mesilate. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 05/10/2022.

Joint Formulary Committee. Loprazolam. British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. https://www.medicinescomplete.com. Accessed 05/10/2022.

Loprazolam 1 mg Tablets (Focus Pharmaceuticals Limited). MHRA. https://products.mhra.gov.uk. Accessed 05/10/2022.

Loprazolam 1 mg Tablets (Zentiva Pharma UK Limited). MHRA. https://products.mhra.gov.uk. Accessed 05/10/2022.

Disclaimer: This information is independently developed by MIMS based on Loprazolam from various references and is provided for your reference only. Therapeutic uses, prescribing information and product availability may vary between countries. Please refer to MIMS Product Monographs for specific and locally approved prescribing information. Although great effort has been made to ensure content accuracy, MIMS shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2024 MIMS. All rights reserved. Powered by MIMS.com
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