Lunesta is a sedative, also called a hypnotic. It affects chemicals in your
brain that may be unbalanced in people with sleep problems (insomnia).

Lunesta is used to treat insomnia.

Lunesta causes relaxation to help you fall asleep and stay asleep.





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

**Some people using this medicine have engaged in activity while not fully
awake and later had no memory of it.** This may include walking, driving, or
making phone calls. If this happens to you, stop taking Lunesta and call your
doctor right away.

Serious injury or death could occur if you walk or drive while you are not
fully awake.

Call your doctor at once if you have:

  * anxiety, depression, aggression, agitation;

  * memory problems, unusual thoughts or behavior;

  * thoughts of hurting yourself; or

  * confusion, hallucinations (hearing or seeing things).

Common Lunesta side effects may include:

  * day-time drowsiness, dizziness, "hangover" feeling;

  * headache, anxiety;

  * dry mouth;

  * unusual or unpleasant taste in your mouth;

  * rash; or

  * cold or flu symptoms such as fever, body aches, sore throat, cough, runny or stuffy nose.

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.

Lunesta side effects (more detail)