I have not heard too many good reports about Concert from people I know, but that doesn't mean much. Have you tried other ADD meds? I've had really good results with Adderall and my daughter has done well on Vyvanse. It is not always easy finding the right medication and dosage, because they affect people differently.
As soon as I started on the Adderall, I did not need my anti-depressant any longer, but I wasn't depressed, I had undiagnosed ADD.
I hope you find the right combination for you
YYZ