I've been suffering from sciatic nerve pain. When I sleep, I am constantly waking up from pain from moving around in my sleep. My doctor has tried various medications but the only thing that works somewhat is Tylenol with codeine. I get 4 hours of solid sleep with that. The rest of the time I fall asleep and wake up many times before I have to get up. I can't take the medication when I wake up during the night because it takes awhile to work for me. The past 3 days, I've been having bursts of energy and then get real down to the point of crying sometimes. I've taken Tylenol with Codeine a few times during my life and have never had such a reaction before. Do you think the fact that I am not getting a good night's sleep may be the cause?