I have been taking Nucynta IR 100mg as one of my pain meds for a couple of years ago. Previously I had taken it as needed, but my dr recently recommended taking it more regulary; 100mg twice a day. Since I have been doing this, I have noticed that my eyelid has been drooping very noticeably a couple of hours after I take it. It drops a little normally, but this I can actually feel and it's quite uncomfortable. Has anyone else had this experience?