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Physical dependence on benzodiazepines: differences within the class.

B Wolf¹, R R Griffiths

¹Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland.

Drug and Alcohol Dependence

|December 31, 1991

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Physical dependence on benzodiazepines (BZD) is a concern. High-potency, short-acting BZD like alprazolam may cause more severe withdrawal symptoms than longer-acting or less potent options.

Area of Science:

Pharmacology
Clinical Medicine
Neuroscience

Background:

Physical dependence is a primary concern limiting long-term benzodiazepine (BZD) treatment.
Withdrawal severity depends on dose, duration, discontinuation method, BZD pharmacokinetics, and concurrent substance use.

Purpose of the Study:

To review literature and clinician experiences regarding factors influencing benzodiazepine withdrawal severity.
To identify specific benzodiazepines associated with more intense or prolonged withdrawal syndromes.

Main Methods:

Literature review of pharmacokinetic and pharmacodynamic factors in BZD dependence.
Interviews with 31 US clinicians experienced in BZD detoxification.

Main Results:

Related Experiment Videos

Short-elimination half-life and high-potency BZD (e.g., alprazolam, lorazepam) are linked to more severe withdrawal.

Alprazolam is frequently cited for severe withdrawal reactions, including psychoses and seizures.

84% of surveyed clinicians identified alprazolam as particularly problematic for withdrawal intensity/duration.

Conclusions:

Pharmacokinetic and pharmacodynamic properties significantly influence BZD withdrawal severity.
Alprazolam presents a notable risk for severe and prolonged benzodiazepine withdrawal syndromes.
Clinical experience supports literature findings on high-potency, short-acting BZD withdrawal.