"i&#039;ve been taking lunesta 2mg for the past year. it is very effective. i fall asleep within the hour and feel rested in the morning. it also relaxes me. the sour taste went away completely after a month of use. the best if you take it on an empty stomach. the only thing i&#039;m concerned is that my body will get used to it and then it won&#039;t help. for now its still a life saver for me after suffering from insomia since i was a teenager. my doctor doesn&#039;t recommend that i take it for more then three times a week because i&#039;m still young, however i have no choice and have to take it every night. i can&#039;t sleep otherwise. i have kids to take care of and a full time job. i must sleep. "