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# Lorazepam
## Overview
Lorazepam is a short-acting benzodiazepine with anxiolytic, sedative, hypnotic, and anticonvulsant properties.
## Primary Indications
* Anxiety disorders
* Insomnia
* Status epilepticus
* Sedation for medical procedures
## Adult Dosing
* **Anxiety:** 1-4 mg orally or IM every 6-8 hours.
* **Insomnia:** 2-4 mg orally at bedtime.
* **Status Epilepticus:** 4 mg IV administered slowly. May repeat in 10-15 minutes if seizures persist, not to exceed 8 mg in a 12-hour period.
* **Pre-procedural Sedation:** 2-4 mg orally or IM 2 hours before procedure, or 0.044 mg/kg IM (max 4 mg) 2 hours before procedure. IV doses may be given intra-procedure.
## Pediatric Dosing
Dosing in pediatrics is highly variable and should be guided by specific clinical indication and institutional protocols.
* **Status Epilepticus:** 0.1 mg/kg IV/IM (max 4 mg per dose) administered slowly over 2-5 minutes. May be repeated once after 10-15 minutes.
* **Sedation:** Dosing varies widely based on age, weight, and indication.
## Dose Adjustments
* **Hepatic Impairment:** Use with caution, may require dose reduction.
* **Renal Impairment:** No specific dose adjustment, but use with caution.
* **Geriatric Patients:** Generally start with lower doses (e.g., 0.5-2 mg daily) due to increased sensitivity and risk of side effects.
## Contraindications
* Known hypersensitivity to benzodiazepines.
* Acute narrow-angle glaucoma.
* Severe respiratory insufficiency.
## Adverse Effects
* Drowsiness, dizziness, sedation, confusion, ataxia.
* Respiratory depression (especially with IV administration or in combination with other CNS depressants).
* Paradoxical reactions (agitation, aggression, hallucinations).
* Dependence and withdrawal symptoms with prolonged use.
## Key Drug Interactions
* **CNS Depressants (e.g., opioids, alcohol, other sedatives):** Increased risk of profound sedation, respiratory depression, coma, and death.
* **Theophylline, Aminophylline:** May antagonize sedative effects of lorazepam.
* **Valproic acid:** May increase lorazepam plasma concentrations.
## Monitoring
* Level of consciousness and sedation.
* Respiratory rate and oxygen saturation.
* Signs of dependence and withdrawal.
* Falls risk.
## Clinical Pearls
* Short-acting, therefore may require more frequent dosing for sustained anxiety relief compared to longer-acting benzodiazepines.
* IV administration should be slow to minimize respiratory depression and hypotension.
* Avoid abrupt discontinuation; taper gradually to prevent withdrawal symptoms.
* Pregnancy category D.
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*Disclaimer: This information is intended for healthcare professionals and is not a substitute for professional medical advice. Always consult the most current prescribing information and institutional guidelines before administering any medication.*
