Ambien is a brand name of generic medicine Zolpidem which works as a sleeping pill to treat a certain sleeping disorder called insomnia. This medicine belongs to a group of pharmaceuticals called non-benzodiazepine sleep aids, which includes sedative-hypnotics. By reducing brain activity, Ambien helps people fall asleep more quickly and get a full night's sleep. It usually helps those who have trouble falling asleep by taking it right before bed.