Lunesta 3 mg can be used to help people fall asleep faster or help them wake up fewer times during the night. You can sleep at least 7-8 hours completely after taking this medication. This induces powerful sedation and drowsiness. Because of the drug's significant potential for abuse, Lunesta 3mg is highly regulated and intended for short-term use only. Lunesta 3 mg is not approved to treat anxiety but helps to treat insomnia due to anxiety.