Sedatives & Hypnotics [Benzodiazepines - Bz1 Receptor Agonists -Barbiturates -Chloral Hydrate - Anti-histaminics) anxiolytics ( Benzodiazepines & Buspirone & Propranolol ] Psychotropic Drugs : Major Tranquillizers [ Typical Antipsychotics - Atypical Anti-Psychotic Drugs ]