Erratic Behavior

• Depressants are known for lowering awareness and inhibitions in its users. Lowered inhibitions can cause people to act in ways they would not otherwise. For example, with enough of a depressant in the system, some individuals may partake in promiscuous sexual practices or drive a vehicle after intoxication.
  
  

Drowsiness

• Many depressants cause excessive sleepiness or drowsiness. Depressants are prescribed to help people sleep. But too much of a depressant can disturb a person's REM cycle sleep, preventing him from getting healthful rest. In fact, prolonged use of depressants may cause people to develop chronic sleep problems such as insomnia.
  
  

Confusion

• Some people become confused or disoriented after taking a depressant. Depressants can cause people to forget the names of friends or family members, and can interfere with their personal motor skills. Some people have trouble speaking clearly or coordinating thoughts. Many workplaces prohibit any types of depressants because they may affect thinking and concentration.
  
  Depressants also commonly cause short-term memory loss. This is largely correlated with excessive alcohol consumption, or with the consumption of Rohypnol, which is also known as the "date rape drug."
  
  

Sex Drive

• The use of depressants can also affect sexual function and the libido, usually as a result of excessive intake or abuse over long periods of time. Depressants can cause neurological damage to the central nervous system, which can affect people's libido, or desire to have sexual intercourse.