Depressants

Depressants are drugs (such as alcohol, barbiturates, and opiates) that reduce neural activity and slow down body functions. Many people think that alcohol is not a depressant and actually makes them have more fun. However, what alcohol does is lower inhibitions, so you may act in ways you otherwise would not. Also, it diminishes your senses - makes you less alert, less attentive, less "sharp", essentially depressing the nervous system.