Ambien can lead to unusual nighttime walking, driving, or performing other tasks while in a state of partial wakefulness. These actions can have severe consequences, including harm or even fatality. Taking Ambien too close to waking time, with fewer than 7-8 hours of sleep remaining, can impair your ability to drive and engage in other activities that require complete attention the following day. To avoid accidental consumption, keep Ambien in a secure location that is inaccessible to both children and pets.