I have been on Cymbalta 60mg for major depression for some time, but at different times I was on 30mg. I noticed that while on 30mg, my academic abilities were lower. Firstly, I didn't feel like doing any work, and secondly when I did, I seemed to be confused and made a lot of careless errors. I've tested this twice now. The last time I took 30mg, I forgot my phone and belt at my apartment and spent a lot more time on a simple program (I am in computer science) than I feel that I normally would...

What is happening here? What's the phenomenology? Does a sub-optimal dose make you more careless, less intelligent???