pain
"I was put on 100mg of Nucynta ER for facial nerve pain. I have found that it doesn't work that well for my pain and it causes intense headaches and fatigue. 



I have also experienced auditory hallucinations at night or when daydreaming when fatigued. Just some really weird side effects, and increased insomnia. I still find more relief from low dose oxycodone for break through pain but like to limit the number of times a week I have to use it.



I find the pain relief to be mild/moderate at best, and with a lot more side effects then the oxycodone, but everyone reacts differently.



If you had any side effects at all when trying Tramadol be cautious, in my experience (with Nucynta) the side effects were the same but more intense."