Duloxetine
"I've been taking Cymbalta for 3 years to treat my fibromyalgia.  I've noticed very little impact on my pain with 60mg a day but emotionally I am well balanced with no big highs or lows.  If I miss a dose for more than 2 days I get very sad and irritable.  I try not to do that.  It's very expensive and I don't like that part. I wasn't expecting the benefit of feeling better emotionally, but that's what Cymbalta does for me."