Ok, I've been drinking a lot of water lately, about 70 ounces a day and I drink it really fast like in 20 ounce spurts. I feel like total crap. I've also been exercising a lot and trying to diet, but I'm having headaches every day, can only sleep about 3-4 hours a night and then I wake up wide awake at about 4 am, and I'm severely grouchy. My question is, is there any chance that all this water I'm drinking (I usually live on Coke, never drink water), is flushing out my system and also flushing the xanax and/or celexa out? I have enough problems without having to stop drinking water because it's messing with my meds. PS--I take .25 mg xanax per day and 20 mg Celexa per day.