I have been taking brand Lunesta for some time,,I fall,asleep quickly stay asepp all,might,,feel rested when i do wake up. Due to increased cost on Medicare part d, 7haved switched to generic form (Eszopiclone) I don t feel I get a good nites sleep & wake up,often . Just these last two days I have had itching chest area mostly. As a matter of fact am up,now, not able to sleep, I ve just taken a 5-mg Valium so still get s o m e sleep. Is there something in the two forms of pills that would cause this effect, my do is 10-27-37, yor help would be appreciated, now have to,Bo,to,sleep!