Management of Alcohol Withdrawal Syndrome
Benzodiazepines are the gold standard first-line treatment for alcohol withdrawal, with long-acting agents like diazepam and chlordiazepoxide preferred for most patients to prevent seizures and delirium tremens. 1, 2, 3, 4
Pharmacological Treatment Algorithm
First-Line: Long-Acting Benzodiazepines
For most patients without contraindications, use long-acting benzodiazepines:
- Diazepam 10 mg orally 3-4 times during the first 24 hours, then reduce to 5 mg 3-4 times daily as needed 5
- Alternative: Chlordiazepoxide 25-100 mg orally every 4-6 hours 1, 2, 4
- Long-acting agents provide superior seizure protection and smoother withdrawal due to self-tapering pharmacokinetics from their extended half-lives 6, 7
- Diazepam has the shortest time to peak effect, allowing rapid symptom control and accurate titration without increased over-sedation risk 6
Special Populations: Switch to Lorazepam
For patients with hepatic dysfunction, advanced age, respiratory failure, obesity, or recent head trauma, use lorazepam instead:
- Lorazepam 6-12 mg/day (typically 1-4 mg every 4-8 hours), then taper after symptom resolution 1, 2, 3, 4
- Lorazepam is safer in hepatic insufficiency because it doesn't require hepatic oxidation 2
- This intermediate-acting agent reduces accumulation risk in vulnerable populations 1, 3
Essential Adjunctive Treatment
Thiamine must be administered to ALL patients with alcohol withdrawal:
- Thiamine 100-300 mg/day to prevent Wernicke encephalopathy 1, 2, 3, 4
- Administer thiamine BEFORE any glucose-containing IV fluids to prevent precipitating acute thiamine deficiency 2, 3, 4
- Continue for 2-3 months following resolution of withdrawal symptoms 1
Treatment Duration
Taper benzodiazepines following symptom resolution, with total duration not exceeding 10-14 days to avoid benzodiazepine dependence 2, 3
Determining Treatment Setting
Admit for inpatient treatment if ANY of the following are present:
- History of withdrawal seizures or delirium tremens 1, 2, 3, 4
- High levels of recent drinking 2, 3, 4
- Co-occurring serious medical or psychiatric illness 1, 2, 3, 4
- Failure of outpatient treatment 2, 3, 4
- Signs of severe withdrawal: anxiety, agitation, tremor, excessive sweating, altered consciousness, or hallucinations 8
Outpatient treatment is acceptable for low-risk patients without these complications, though it requires close monitoring 1
Alternative and Adjunctive Agents
When benzodiazepines alone are insufficient:
- Carbamazepine 200 mg every 6-8 hours as an alternative for seizure prevention 2, 3, 4
- Haloperidol 0.5-5 mg every 8-12 hours ONLY as adjunctive therapy for agitation or psychotic symptoms not controlled by benzodiazepines 2, 3, 4
- Note: Neuroleptics increase seizure risk and should never be used as monotherapy 8
Supportive Care
Provide conservative management alongside pharmacotherapy:
- Fluids and electrolyte replacement (especially magnesium) 1, 2
- Comfortable, reassuring environment with close personal support 8
- Frequent monitoring of vital signs, particularly in severe cases 1
Assessment Tools
Use CIWA-Ar score to guide treatment intensity, NOT for diagnosis:
- Scores >8 indicate moderate AWS requiring treatment 2, 3
- Scores ≥15 indicate severe AWS requiring aggressive management 2, 3
- CIWA is not recommended for diagnosis because high scores occur in other conditions like sepsis, hepatic encephalopathy, anxiety disorders, and severe pain 1
Critical Medications to AVOID
Never use the following in patients with alcoholic liver disease:
- Disulfiram—risk of hepatotoxicity 3, 4
- Naltrexone—risk of hepatotoxicity 3, 4
- Beta-blockers increase hallucination risk 8
- Clonidine increases nightmare risk 8
Coordination of Care
Psychiatric consultation is strongly recommended for:
- Comprehensive evaluation and acute AWS management 1, 3
- Long-term abstinence planning 1, 3
- Coordination between hepatologists and addiction specialists to reduce treatment delays 3
Common Pitfalls
The fear that diazepam causes increased over-sedation compared to other benzodiazepines is unfounded and based on misunderstanding of its pharmacokinetics 6
The notion that diazepam should be avoided in liver disease and elderly patients is based on conjecture, not evidence—clinical data shows it is safe when using symptom-based dosing 6
Avoid intramuscular diazepam due to slow, erratic absorption from its lipophilicity—use lorazepam or midazolam instead if IM administration is the only option 6