Has anyone had any luck with Abilify for major depression or bi-polar disorder esp. if used with Prozac?

I heard that it works well in conjunction with other anti-depressants. I have pretty bad depression and I'm on 40 mg. of Prozac. It doesn't seem to be helping much and I'm wondering if adding Ability might help. I do have Hep.C (my last blood tests showed that it's not bad)but doctors agree that the risk of taking the meds. is worth it since my depression is so debilitating. Thanks for any opinions or information.