Needless to say, wifey was a "little" less non-chalant about the whole situation. I varied from frustrated, to scared to death, to livid. Brother showed up because I SENT him to the scene to stay with him til I could get there to take him home.
I will say that I agree that he may seem off about it because he honestly doesn't recollect it at all...therefore doesn't have the benefit of the "shock" of the situation. I've been given meds before that I honestly don't recall how I got from point a to point be or what happened inbetween..fortunately, I was with someone very trustworthy who took good care of me while I was out.
Needless to say, I now control when he takes his "sleepy" meds and what he does afterwards.