Episode 72- "Alcohol Withdrawal? Try Phenobarbital!": Part 2: Dosing + Monitoring

Phenobarbital serves as a highly effective alternative to benzodiazepines for managing alcohol withdrawal in emergency and intensive care settings. Clinical evidence, including a randomized controlled trial by Rosenson et al., demonstrates that a 10 mg/kg loading dose significantly reduces ICU admissions compared to standard lorazepam protocols. Further data indicates that phenobarbital use correlates with shorter hospital stays and a decreased need for mechanical ventilation. Optimal administration involves a weight-based loading dose followed by small PRN doses, targeting a therapeutic serum level of approximately 15 mcg/mL. Safety protocols prioritize avoiding the combination of phenobarbital and benzodiazepines due to synergistic risks of respiratory depression. Ideal candidates are patients under 70 without significant liver or respiratory disease who present with moderate to severe withdrawal symptoms. Monitoring vitals every 15 minutes during the initial loading phase ensures patient safety while leveraging the drug's predictable linear pharmacology.