msinfiniti,

The amnesia can be a side effect of the Lunesta as well as Ambiem. While on these medications I have done a variety of bizarre things. I have one friend, a non-drinker, that would drive to the corner Quick mart buy beer, drink it and have no memory of it the next morning. In fact she had no idea she was doing it until she complained to her roommate about leaving beer cans laying around.