Ambien (zolpidem) is a medicine that helps people who have trouble sleeping, also known as insomnia. It works by slowing down brain activity, allowing you to fall asleep faster and sleep more deeply. Ambien is mainly used for short-term sleep problems and should be taken before bedtime. You can buy it online with a doctor’s prescription. It’s essential to use it carefully, as it can cause side effects such as dizziness, sleepiness, or fatigue the next day. When used the right way, Ambien can help you get a good night's sleep and wake up feeling fresh and ready.