Cymbalta and
Pristiq are both Serotonin Norepinephrine Reuptake Inhibitors (SNRIs). After abrupt or tapered Discontinuation, the following Symptoms occurred at a Significantly higher rate in Cymbalta patients: dizziness, Nausea, headache, Vomiting, irritability, insomnia, Diarrhea, anxiety. A gradual reduction, rather than abrupt cessation is recommended. http://pi.lilly.com/us/cymbalta-pi.