Valium is a Diazapam. Xanax is Benzodiazepine.....If you are going to do coke and really need to take the edge off then stick to Benzo's and you'll be safe. Diazapam's will cause mixed signals to your heart and can cause cardiac arrest......I'm really not trying to think I know more than you or anything. I just want you to be aware that what you are prescribing is deadly. Take it or leave it. Hopefully next time you are in a situation you will think about what I said and may not be as willing to go out, do an 8 ball of coke, come home, pop two valiums and go to sleep without at least thinking about what I told you.