I would think the combo of Lexapro and Zoloft is causing you to be more tired than you would have been w/ Zoloft alone. I remember starting Zoloft and I was very tired, as was my mom, who has been on Zoloft for 4389 years.

Ideas? Hmmm.... Well you are taking it at a good time. 6 cups of coffee per day? No, you eliminated caffiene, didn't you? I hate to say, but I don't think there is anything you can do except wait until it gets worked into your system. It should get a little better each day. I remember when I started my combo of Lexapro, Lithium, and Klonopin there were days in the beginning when I literally couldn't pick my head up... and then slowly it got a little better each day. It sucks because it pretty much takes over your body and there isn't much you can do to combat it.