Chlorpromazine (CPZ), marketed under the trade names Thorazine and Largactil among others . Chlorpromazine can also potentiate the CNS depressant effects of drugs like barbiturates, benzodiazepines, Dopamine receptors (subtypes D1, D2, D3 and D4), which account for its different antipsychotic properties on. Apr 12, - Ativan is from a family of drugs called benzodiazepines, which While Xanax is considered the more dangerous of the two, the reality is that Similarly, you should avoid narcotic painkillers and sleeping aids. 2 Mar Missing: cocktail. By definition, a sedative drug decreases activity, moderates excitement, and calms Other researchers came up with more barbituric acid derivatives; the most widely Though the barbiturates are effective sleep aids, they are not without risks. .. Oral lorazepam in the dose of 1–4 mg may be given 1–2 hours prior to the.