I've never taken the sleeping pill Ambien, but I see the commercials a lot. Actually, I see the commercials for Ambien CR a lot, which they only came up with because the original Ambien was going off patent (ask my pharmacist wife). My point, though, is that all the commercials say to only take Ambien if you have eight hours to devote to sleep. Well, what if you don't have eight hours to devote to sleep? Why not make a six-hour or four-hour sleep aid? I don't really understand how it's supposed to work for someone who's been prescribed Ambien, anyway --- if I'm lying in bed and can't get to sleep, then almost by definition it's less than eight hours before I have to wake up. Does anybody have any experience with this and know how it's supposed to work?