Side Effects of Lunesta

Lunesta is a sedative, also called a hypnotic. It affects chemicals in your brain that may become unbalanced and cause sleep problems (insomnia).

Lunesta is used to treat insomnia. This medication causes relaxation to help you fall asleep and stay asleep.

Lunesta may also be used for purposes other than those listed in this medication guide.

Do not use this medication if you are allergic to eszopiclone.

Before taking this medication, tell your doctor if you are allergic to any drugs, or if you have:

  • liver disease;
  • sleep apnea (breathing stops while you are asleep);
  • lung disease such as asthma, bronchitis, emphysema, or chronic obstructive pulmonary disease (COPD);
  • a history of depression, mental illness, or suicidal thoughts; or
  • a history of drug or alcohol addiction.

If you have any of these conditions, you may need a dose adjustment or special tests to safely take Lunesta.

Lunesta may cause a severe allergic reaction. Stop taking Lunesta and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using Lunesta and call your doctor at once if you have any of these serious side effects:

  • aggression, agitation, changes in behavior;
  • thoughts of hurting yourself; or
  • hallucinations (hearing or seeing things).

Less serious side effects may include:

  • day-time drowsiness, dizziness, “hangover” feeling;
  • problems with memory or concentration;
  • anxiety, depression, nervous feeling;
  • headache;
  • nausea, stomach pain, loss of appetite, constipation;
  • dry mouth;
  • unusual or unpleasant taste in your mouth; or
  • mild skin rash.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

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