Clinical beta

FMBM is currently in clinical beta. Content is for professional review/testing and must not replace local protocols, senior clinical judgment, or official prescribing references.

Drug Monograph

USE IF: Acute seizures, status epilepticus, agitation, alcohol withdrawal, procedural sedation

AVOID IF: Severe respiratory depression, acute CNS depressant intoxication without airway support

Lorazepam

Benzodiazepine (anticonvulsant, anxiolytic, sedative)

AdultPediatricERICUNeurologyPsychiatryHigh-yield

Indication

Seizures • Status epilepticus • Agitation • Alcohol withdrawal • Sedation

At a glance

INDICATIONS (CORE USE)

- Status epilepticus (first-line) - Acute seizures - Agitation - Alcohol withdrawal

ADULT DOSE (STANDARD)

IV dosing per protocol (repeat dosing may be required) IM/PO in selected contexts

MAX DOSE

Protocol- and monitoring-based; avoid unmonitored repeat dose stacking

Route

IV • IM • PO

PEDIATRIC DOSE

Protocol-based

Do not miss

Must-not-miss safety points

Major warning

- Respiratory depression with airway compromise risk - Additive CNS depression (especially with opioids) - Oversedation risk with repeat dosing - Accumulation and prolonged sedation with repeated dosing

Indications

INDICATION: Seizures • Status epilepticus • Agitation • Alcohol withdrawal • Sedation

Primary

  • Status epilepticus
  • Acute seizures

Secondary

  • Agitation
  • Alcohol withdrawal
  • Sedation

Dosing

STANDARD (ADULT PO)

IV dosing for seizures may be repeated per protocol based on response and respiratory status

ADULT DOSE

STANDARD (ADULT): - IV dosing for seizures; repeat based on protocol response targets

PEDIATRIC DOSE

Protocol-based

MAX DOSE

Protocol-defined cumulative limits with airway and cardiorespiratory monitoring

Practical Note

- Preferred in hospital for seizure control - More sustained CNS effect than diazepam - Avoid excessive repeat dosing without monitoring

Warnings

Clinical warnings

  • Respiratory depression
  • Sedation and CNS depression
  • Hypotension (less than diazepam but still possible)
  • Dependence with repeated use

Adverse effects

  • Drowsiness
  • Respiratory suppression
  • Hypotension
  • Ataxia

Contraindications

  • Severe respiratory depression
  • Acute CNS depressant intoxication
  • Known hypersensitivity

Drug interactions

  • Opioids increase risk of respiratory depression and death
  • Alcohol causes additive CNS depression
  • Other sedatives increase oversedation and respiratory risk

Special populations

Pediatrics

Protocol-based

Pregnancy

Pregnancy: Use only when benefits outweigh fetal risk in acute high-risk indications

Lactation

Monitor infant for sedation if clinically relevant exposure occurs.

Renal impairment

Use caution in severe renal dysfunction and monitor for prolonged sedation when repeat dosing is required.

Hepatic impairment

Generally safer than diazepam regarding accumulation, but still requires close clinical monitoring.

Elderly

Increased sensitivity with sedation and falls; use lower doses and close monitoring.

Administration

- IV preferred in acute seizures - IM/PO are alternative routes in selected contexts - Monitor airway and breathing continuously in acute care settings

Monitoring

  • Monitor: - Respiratory status (critical) - Level of consciousness - Seizure control - Blood pressure
  • Recheck: - After each dose in acute settings - Continuous monitoring in ER/ICU
  • Hold / reassess: - Respiratory depression - Excess sedation - Hypotension

Overdose / toxicity

Clinical Picture

CNS depression, respiratory depression, and coma

Immediate Actions

Airway protection and ventilatory support as needed

Antidote

Flumazenil (use cautiously; seizure risk)

Decontamination

Supportive toxicology-directed management

Escalation

Escalate to ICU-level support for progressive respiratory or neurologic compromise

Clinical pearls

Common mistakes, resistance logic, and bedside traps

High-Yield

  • First-line hospital benzodiazepine for status epilepticus
  • Longer CNS effect than diazepam

Clinical

  • Preferred IV benzodiazepine in many hospital protocols for acute seizure control

Safety

  • Most dangerous combination is benzodiazepine plus opioid due to respiratory risk

Pharmacy Tool

Preparation Calculator

Lorazepam 1 mg/mL oral suspension

suspension · oral

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Pharmacokinetics

- Intermediate half-life - No active metabolites (advantage vs diazepam)

Mechanism of action

- Enhances GABA-A receptor activity leading to CNS inhibition

Common brand names

Saudi Arabia

Ativan, Lorazepam

Global

(placeholder — verify local formulation)

Common trade names are curated examples only — formulations and availability vary. Verify the exact product name with your local pharmacy and national regulator before prescribing or dispensing.

Country practice notes

Global data (no country-specific data available)

  • Follow local antimicrobial stewardship policy, hospital formulary, and national resistance guidance.
  • Confirm dosing, stock, and restrictions with institutional pharmacy and current product labeling.

References

Saudi Arabia

  • SFDA (Saudi Food & Drug Authority)
  • Saudi National Formulary / MOH (where available)

International

  • WHO Model List of Essential Medicines (verify current edition)
  • US FDA or EU EMA product information (when national SmPC is unavailable)
  • Product labeling (lorazepam)
  • Local status epilepticus, withdrawal, and sedation protocols