I found one of these pills, which is dark blue and dark green and says 32 37 on it, in the bottom of my friend's purse.

As far as I know she doesn't take any allergy pills or anything like that, so I'm worried she may be on some kind of pills for depression or even taking pills she's not supposed to.

Please reply as soon as possible.

First of all, I have to wonder why you were going through your friend's purse. Why not ask her what it is.

I am assuming you are talking about this drug?

http://www.drugs.com/images/pills/mmx/t107246f/cymbalta.jpg