Depressants?

Im doin this project about drugs.
I necessitate to know wat there made of. So does anyone knoe?Depressants?
Do you be set to depressants such as tranqulisers?
Depressants calm nerves and relax muscles. Depressants are chemicals which depress, or slow down, the functioning of the brain and intermediate nervous system (CNS).
Depressants dive into one of two main category: tranquilizers and sedative-hypnotics. common given name for sedative-hypnotics is sleeping pills.
Depressants are all made of different things. There are Benzodiazepines (Valium, Librium, Xanax & Ativan), meprobamate, sedating antihistamines, Barbiturates, Placidyl, Doriden, Quaalude, Halcion and 'Major Tranquilsers' (Thorazine, Mellaril & Prolixin). You cannot generalise what is contained by depressants.
i dont know what they r made of but i used them and they dont help at adjectives