Ambien, known by its generic name zolpidem, is a prescription medication used to treat insomnia, particularly in people who have trouble falling asleep. It belongs to a class of drugs called sedative-hypnotics, which work by slowing down activity in the brain to help promote sleep. Ambien is commonly prescribed for short-term use and has helped millions of people get the rest they need. However, like all medications, it comes with potential risks and side effects that must be carefully considered.