Lorazepam

Lorazepam

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Benzodiazepine Very Addictive High Abuse Potential
Sedating: Yes Driving: Avoid QT risk: None Akathisia: None Metabolic: Low Prolactin: Low t½: 15 h Tmax: 2 h

The NHS favourite for short-term calming. Lorazepam kicks in fast, doesn’t hang around as long as diazepam, and is often used in hospitals for acute agitation, seizures, or before scary procedures. Stronger milligram-for-milligram than diazepam, which makes it a double-edged sword. Useful in a crisis, but addictive with long use — which is why prescriptions are meant to be short and sharp.

Uses • Warnings

🩺 Main Uses

Anxiety; agitation; status epilepticus (IV).

🧪 The Science & Facts

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Half‑life (t½)

15 h

How long the drug hangs around. Longer half‑life = slower changes.

Time to Peak (Tmax)

2 h

Roughly when you feel the main effect after a dose.

What it hits (receptors)

Primary:

GABA-A (positive allosteric modulator)

No CYP metabolism; cleared by glucuronidation.

How your body processes it (metabolism)

Substrate: UGT (glucuronidation)

Minimal CYP interactions.

⚠️ Warnings

  • Potent intermediate benzo, often used for acute anxiety.
  • High risk of dependence even with short courses.
  • Withdrawal can be brutal, with high seizure risk.
  • Shorter half-life than diazepam → interdose withdrawal possible.
  • Cognitive dulling and sedation are common.

Benzo detected — read this first

Benzodiazepines and Z‑drugs can cause severe dependence and withdrawal. Never stop abruptly.

Street Benzo Warning (UK)

High rates of contamination reported by WEDINOS. Fake Xanax is common.

For tapering, see the Ashton Manual and the TripSit Converter.

💊 Open Benzo Converter

⏬ Taper & Withdrawal

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If you’re reducing

Gradual taper over weeks–months to avoid seizures.

Possible withdrawal

Rebound anxiety, tremor, agitation, seizures if abrupt.

Info here is educational, not medical advice. Always taper with prescriber support if possible.

🧠 Trusted External Sources Last reviewed 22 Aug 2025, 21:28 by Connor O’Driscoll

🔗 Interaction Checker

Always verify drug interactions using the Drugs.com Checker.

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⚠️ Black Box Warning

All benzos: dependence, tolerance, ↑ mortality with opioids.

This is a plain‑English summary of headline safety warnings. Talk to a clinician before changing any medication.