Depressants have three categories;
1. Hynotics which induce sleep
2. Sedatives which do not induce sleep but produce a relaxing effect to help one fall asleep
3. Tranquilizers such as Valium and Xanax, which are used to alleviate anxiety, tension, and relax muscles.
Depressants can be synthesized, or occur naturally in plans such as belladonna and curare.
Abusing depressants causes the person to be in a state of intoxication much like that of alcohol, with impaired judgment, inebriation, and loss of motor coordination. Other symptoms include a weak and rapid pulse, slow or rapid but shallow breathing, and cold and clammy skin.
Common effects are:
1. Symptoms of alcohol intoxication with no alcohol odor on breath
2. Lack of facial expression or animation
3. Flaccid appearance
4. Slurred speech