Ambien is FDA-approved for the short-term treatment of insomnia in adults. It helps individuals fall asleep faster and stay asleep longer by enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA), which helps to calm brain activity. Ambien can be particularly effective for individuals who have trouble staying asleep throughout the night. It helps to reduce nighttime awakenings and improve overall sleep quality.