promote onset & maintenance of sleep + can be awakened readily;
Discontinuation: should be done slowly, bc--> REBOUND REM Sleep, Psychological Dependence, rebound insomnia
some tolerance development (barbs 2 ws, BDZ 4-6ws);
decr activity, moderates excitement and calms recipient
Many also hypnotics; little or no effect on motor/mental function.
most: higher duration--> less dependency & more daytime sedation
frequent use--> impaired memory, dependency (esp in women)