I've been on varying doses of Cymbalta for the past decade. Most recently, I've been on 120 mg/day for major depressive disorder, but it's been less and less effective. My doctor and I agreed to try a cross taper to get me off Cymbalta and onto Prozac. She is having me drop from 120 mg to 60 mg/day of Cymbalta while adding 10 mg/day of Prozac. I will see her again in 4 weeks. Today is day 3, and I have a horrible headache and neck pains. Thoughts? How long will these physical pains last? Does anyone have suggestions about how to stay the course?