How does Ambien work? Generally, doctors advised this kind of medication for the treatment of sleep problems or insomnia. This medication helps people to fall sleep by working slowly in the brain.Ambien is available in two forms, quick-release form, and an extended-release way. You may order Ambien online in the immediate release form that used to help you fall asleep when you first go to bed. The extended-release type of this medication comes in the combination of two layers.