Ambien Being a sedative-hypnotic, Ambien depresses the central nervous system to produce its therapeutic and side effects. Like all other medications, Ambien also produces some mild side effects. Short-term effects of Ambien use include: Drowsiness or sleepiness Sedation Relaxation and calmness medication is a central nervous system depressing substance. It is the most frequently prescribed and used medication for insomnia in the Unite