I have insomnia bad.I have just got back on Zolpidem ER 12.5 #LUE62 made by Lupin.I still have to take something to fall asleep.After some research I used to take the same but made by a different manufacturer.Letter ZCR made by Winthrop.I am forced by my insurance to us CVS and come to find out CVS has a contract with Winthrop ZCR,but no CVS will order it for me.I always fell asleep within a half hour with them.Any advice?