Ambien is also known as Zolpidem. Ambien is used to Term problems like insomnia. Ambien is very useful when you are going to bed for sleeping. Ambien takes action for only 3 hours for sleeping. Helps you fall asleep faster. Ambien can be very harmful so consult with a doctor. Continuing to take Ambien can lead to other thoughts such as suicidal thoughts and depression. A person who is too old should not use this medicine like a 50 to 60-year-old man.