Thanks to Visit My Site BigpharmaUSA.com Lunesta is a medication used to treat insomnia, specifically for helping people fall asleep or stay asleep. It belongs to a class of drugs called sedative-hypnotics. Lunesta works by affecting certain chemicals in the brain that may be unbalanced in people with sleep problems, helping to induce and maintain sleep. It is typically prescribed for short-term use due to the potential for dependence or tolerance over time.