A Failed Experiment

Thanks to the effects of the evil dex, I use Ambien so that I can sleep at night. But I’ve been waking up a little later than I’d like, so last night I tried an experiment: I took the Ambien an hour earlier than usual. I figured it would also wear off an hour earlier than usual and I’d wake up earlier.

Instead, I woke up an hour later than normal. What’s up with that? Should I try taking the Ambien another hour earlier tonight? Will that finally do the job, or will I sleep until lunchtime?