I take Cymbalta, started on 30mg had no effect at 3months was raised to 60mg. It started working but slowly and caused rapid cycling. Within 4months the cycling had stopped and my mood is stabilized. But i have had very different luck with SSRI's. Fluoxitine, Sertaline and Citalopram on starting dose's all sent me manic within 3 weeks and all took over 6months to get me down again.