If you can get to a store, valerian might help. I used to use heroin. There's nothing like a big shot of heroin to help you come down off coke, but you won't find that at most stores. If you go to an Indian grocer you might be able to find bulk poppy seeds and make some poppy seed tea real quick. Just be careful you don't overdose on whatever you take because the cocaine will make you not feel it and then when the cocaine wears off it will kick in full force all of a sudden.