Eszopiclone is a prescription medication primarily used to treat insomnia. It belongs to a class of drugs known as sedative-hypnotics, which help individuals fall asleep and stay asleep. Eszopiclone works by affecting certain chemicals in the brain that may be unbalanced in people with sleep problems. Typically taken before bedtime, Eszopiclone can help improve sleep quality and duration. It is important to use this medication under a doctor's guidance, as it may cause side effects such as dizziness or daytime drowsiness. Long-term use should be monitored to avoid dependency.