Theoretically over time the maoi effects of kava could interfere with ssris, but I think others have used them together with no problem. You could talk to your doctor about the interactions, who probably doesn't know much about kava, or you could try a small dose over time and see how it makes you feel with your personal neurochemistry.
We are not doctors, we can't really give you advice on medical interactions because we all have different body chemistries. The smart thing to do is to educate yourself on kava and how it may affect your body chemistry and/or speak to your PCP. You can start on my signature, there's a link for FAQ's.