"Complex" Behaviors

One of the major side effects of Ambien is what the FDA described, in its request for stronger warnings on the medication, as "complex behaviors." In other words, uncharacteristic changes in behavior and thinking. The use of the word "complex" may just be the FDA's polite way of saying "bizarre."

According to Ambien's Web site, these changes in behavior include:

Among the things described as strange behavior are sleep-driving, sleep-eating and making phone calls or having sex with no memory of it.

Memory Loss

Airplane

Memory loss is also listed as a side effect of the sleeping pill. Memories could potentially be wiped out during the several hours following taking Ambien.

According to Ambien's Web site, memory loss can be a problem "when sleep medicines are taken while traveling, such as during an airplane flight, and the person wakes up before the effect of the medicine is gone. This has been called 'traveler's amnesia.'"