A 35-year-old man presented to the casualty with agitation, global confusion, disorientation, hallucinations and autonomic hyperactivity. On history taking, he had his last alcohol drink 5 days ago. Which of the following can be used in the immediate treatment of the condition?

The clinical presentation suggests severe alcohol (ethanol) withdrawal or Delirium Tremens. The immediate management includes the use of long-acting benzodiazepines. In the given choices both Chlordiazepoxide (Librium) and Diazepam are long acting. However, Chlordiazepoxide (Librium) is longer acting than diazepam. The longer acting benzos prevent the serious complications of seizures. Thiamine and multivitamins are used in the initial phase to prevent Wernicke's encephalopathy.