<prompt> A chronic alcoholic presented to the casualty with altered sensorium. His blood sugar level was normal. Which of the following is the treatment to be given:-Inj.VitaminBlIV dextrose 5IV dextrose 50IV Normal saline  <response>: Ans. is a Inj. Vitamin B1 .This chronic alcoholic patient is in altered sensorium due to Wernickes encephalopathy.TreatmentWernickes disease is a medical emergency and requires immediate administration of thiamine i.v. or i.m..Note: That glucose infusion may precipitate Wernickes disease in a previously unaffected patient or cause a rapid worsening of an early form of the disease.For this reason thiamine should be administered to all alcoholic patients requiring parenteral glucose. 