I was prescribed Cymbalta but my pharmacist gave me generic duloxetine instead as its much less expensive (am in Ireland so dispensing may be different to UK). I have been getting more and more tired every day. Yesterday I slept for 14 hours straight and still neded a nap in the afternoon. Has anyone else experienced this? Does it wear off as you get used to the tablets? Should I take them at night instead of in the morning? Any help gratefully received, my DH doesn't understand and tells me I need to get off the couch and exercise more! Which if I had the energy is exactly what I'd do.