Ambien, also known by its generic name zolpidem, is a prescription medication primarily used for the short-term treatment of insomnia, including difficulties with falling asleep or staying asleep. It belongs to a class of drugs called sedative-hypnotics, which work by enhancing the activity of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain. This leads to a calming effect, helping to induce sleep. Ambien is commonly prescribed to help individuals with insomnia sleep more effectively. It's usually recommended for short-term use, typically for a few weeks at most, to avoid the risk of dependence and tolerance.