I am right there with you. My anxiety is really rough on me and the meds that I take to help it slow me down. It sucks with a lot the depression meds because the knock out the reward center of our brains so even the things that should help us feel better, like exercise, doesn't help. I hope it turns around for you.
Do you really think your body is lacking anti-depression pills or maybe it's something else you haven't thought about yet?