Ambien is a sedative, also called a hypnotic. Ambien (zolpidem) affects
chemicals in the brain that may be unbalanced in people with sleep problems
(insomnia).

Ambien is used to treat insomnia. The immediate-release tablet is used to help
you fall asleep when you first go to bed. The extended-release form, Ambien
CR, which has a first layer that dissolves quickly to help you fall asleep,
and a second layer that dissolves slowly to help you stay asleep.

Your doctor will determine which form of Ambien is best for you.





 **Zolpidem may cause a severe allergic reaction.** Stop taking Ambien and get
emergency medical help if you have **signs of an allergic reaction:** hives;
difficulty breathing; swelling of your face, lips, tongue, or throat.

Report any new or worsening symptoms to your doctor, such as: depression,
anxiety, aggression, agitation, confusion, unusual thoughts, hallucinations,
memory problems, changes in personality, risk-taking behavior, decreased
inhibitions, no fear of danger, or thoughts of suicide or hurting yourself.

Stop using this medicine and call your doctor at once if you have:

  * chest pain, fast or irregular heartbeat, feeling short of breath;

  * trouble breathing or swallowing; or

  * feeling like you might pass out.

The sedative effect of Ambien may be stronger in older adults.

Dizziness or severe drowsiness can cause falls, accidents, or severe injuries.

Common Ambien side effects may include:

  * daytime drowsiness, dizziness, weakness, feeling "drugged" or light-headed;

  * tired feeling, loss of coordination;

  * stuffy nose, dry mouth, nose or throat irritation;

  * nausea, constipation, diarrhea, upset stomach; or

  * headache, muscle pain.

This is not a complete list of side effects and others may occur. Call your
doctor for medical advice about side effects. You may report side effects to
FDA at 1-800-FDA-1088.

Ambien side effects (more detail)