Ambien is one of the numerous brand names under which the drug zolpidem is marketed. It is an ethical drug, meaning that it can be obtained legally only with a physician’s prescription, and is used to treat insomnia. Many use it for non-medical purposes and become addicted, suffering painful symptoms if they stop using it. Ambien rehab programs are available for such people. They often consist of psychotherapy as well as treatment for the physical problems that are causing the addiction. The primary function of such a program is to teach people how to functioning without turning to the drug.