Lunesta works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that promotes relaxation and sleep.Buy Lunesta online to get relax from insomnia because it is the best medicine for preventing insomnia disease. It acts on specific receptors in the brain, helping to facilitate sleep.It's typically prescribed for short-term treatment of insomnia, particularly for difficulties with sleep onset and maintenance. Lunesta is usually taken just before bedtime.