Eszopiclone is a medication used to treat insomnia, a common sleep disorder characterized by difficulty falling asleep or staying asleep. It belongs to a class of drugs called nonbenzodiazepine hypnotics, which work by affecting certain chemicals in the brain to help promote sleep. Eszopiclone is typically taken orally, shortly before bedtime, and should only be used for short-term treatment of insomnia. Prolonged use or misuse of eszopiclone can lead to dependence, tolerance, and withdrawal symptoms. Common side effects of eszopiclone may include headache, dizziness, drowsiness, and dry mouth. It’s important to use eszopiclone as directed by a healthcare provider and to avoid alcohol and other sedative substances while taking this medication.