... more on than off, for the past three years. I am worried about its long term side effects. My memory is slipping and I have a lot of tiredness. If I don't take it, I start feeling nauseous by around one or two in the PM. Does this mean I am dependent? I also suffer from night sweats and have read this is a side effect. I see my neurosurgeon next month. Should I ask for help stopping nucynta and ask for something to help?