Are headaches a side effect of cymbalta (duloxetine)?

They can be: Yes, Cymbalta (duloxetine) can cause headaches as a side effect. These may dissipate over a couple of weeks -- i hope they will for you. Please tell your physician about them so s/he will know. Best wishes.

Headaches are: A moderately common side effect of cymbalta (duloxetine).

Yes: It is a common reaction. If you just started give it a few more days until your system gets used to it. If it continues or worsens contact your doctor.

Cymbalta/HAs: Yes, dose dependent, fairly common.

Yes.: Most people don't, but this is a more common side-effect for some!