Which of the following drug is commonly used in narcoanalysis ?

Controlled administration of intravenous hypnotics to obtain information from subjects who are unable or unwilling to provide it otherwise, is known as Narcoanalysis or Narcosynthesis. Drugs used for narcoanalysis are: Ethanol Scopolamine Temazepam Barbiturates like Thiopentone and Amobarbital These drugs are also known as truth drug or truth serum. Phenobarbitone is not used, rather amobarbital is used for narcoanalysis.