I have been taking tramadol for post-surgery back pain for 2 years.

My question is, Does tramadol have an ingrediant in it that is meant to increase mood, similar to prozac etc.
I find that my mood is elevated when I take it and goes down when I am not taking it. If there is a component similar to anti-depressants, does anyone know of an anti-depressant that would have similar effects. I would like to stop taking Tramadol but, I would like to find an alternative drug that will raise my mood in the same way Tramadol does.