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Overview of Lorazepam Uses and Effects

Apr 25, 2025

About Lorazepam

Introduction

  • Lorazepam is a medicine classified under benzodiazepines.
  • Brand name: Ativan.
  • Primarily used to treat:
    • Anxiety
    • Sleeping problems related to anxiety
  • Used as a pre-med to help relax before:
    • Operations
    • Medical or dental treatments
  • Functions by increasing levels of gamma-aminobutyric acid (GABA), a calming chemical in the brain.

Availability and Administration

  • Available by prescription only.
  • Comes in forms of:
    • Tablets
    • Liquid for oral consumption
  • Administered as an injection in hospitals for seizures or fits.

Key Facts

  • Onset and Duration:
    • Tablets and liquid take effect in 20-30 minutes.
    • Full sedating effect lasts 6-8 hours.
  • Common Side Effect:
    • Daytime drowsiness.
  • Usage Recommendations:
    • Not advised for use longer than 4 weeks.
    • Avoid driving, biking, or operating tools/machinery if drowsy.
    • Avoid alcohol; can cause deep sleep, breathing problems, and difficulty waking.

Additional Information

  • For more information, refer to further sections on:
    • Who can and cannot take lorazepam.
    • How and when to take it.
    • Side effects.
    • Considerations during pregnancy, breastfeeding, and for fertility.
    • Interactions with other medicines and supplements.
    • Common questions about lorazepam.

Reviews and Updates

  • Last Reviewed: 14 February 2023
  • Next Review Due: 14 February 2026

Additional Support Links

  • For further support, explore links related to:
    • NHS Home
    • Health A to Z
    • Live Well
    • Mental Health
    • Care and Support
    • Pregnancy
    • NHS Services
    • COVID-19
    • NHS App
    • And more related services and policies.