I you should always have Valium/Ativan on hand. It will kill the buzz of coke or other drugs, speedy ones especially. Antipsychotics (zyprexa , seroquel) will stop a bad trip or psycadelic madness.Ritalin, speed, adderall, will get you up if you can't function or seriously hung over . Don't take too much or to will be flying again. You can score OTC versions of these a any 24h pharmacy. Sudafed/decongestant = speed.Benadryl or gravol = downerAdvil for pain. In Canada we can ask the pharmacist for Tylenol #1 with 15mg of codeine. Only one per customer and you sign a book and show ID. For god sake put it away and definitely don't do more before you meet sober people . You'll reek like all night party man if you don't shower well.