Diazepam

Diazepam

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Benzodiazepine Very Addictive High Abuse Potential
Sedating: Yes Driving: Avoid QT risk: None Akathisia: None Metabolic: Low Prolactin: Low t½: 40 h Tmax: 2 h

The classic benzo. Diazepam has been around since the 1960s and still shows up everywhere — for anxiety, muscle spasms, alcohol withdrawal, even dental procedures. Long half-life means it builds up in your system, which makes it less “wham-bam” than Xanax but easier to taper. It’s addictive, tolerance builds fast, and stopping after long use can be dangerous without a plan. For short-term relief it works — but in 2025, the NHS tries hard not to hand it out like Smarties anymore (even though that’s exactly how it was given in the past).

Uses • Warnings

🩺 Main Uses

Anxiety; muscle spasm; alcohol withdrawal; seizures.

🧪 The Science & Facts

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Half‑life (t½)

40 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)

Long half-life, active metabolites (desmethyldiazepam).

How your body processes it (metabolism)

Substrate: CYP2C19Substrate: CYP3A4

Active metabolites extend duration.

⚠️ Warnings

  • Long-acting benzo → useful for tapering but builds dependency fast.
  • Sedation, muscle relaxation, memory impairment common.
  • Risk of falls in elderly.
  • Highly addictive with tolerance developing quickly.
  • Withdrawal can cause seizures, panic attacks, and insomnia.

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

Slow taper essential (10% every 1–2 weeks).

Possible withdrawal

Rebound anxiety, insomnia, tremor, 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: risk of dependence, misuse, and ↑ mortality when combined with opioids.

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