1980s American Cars, Guns, Gadgets and Consumer Goods [Atmosphere, look, minutiae]

[woodchuck]

Originally Posted by Icelander

What chemicals might there be in 1988 cocaine from Florida, Montréal, Massaschuttes or New York that might cause dangerous side-effects to an otherwise healthy person?

Obviously, cocaine is not healthy even uncut, but assuming a habitual user, it's something he has survived so far. I'm looking for something more dangerous than a habitual couple of grams combined with heavy drinking. On the other hand, it can't hurt to get ideas on how cocaine (maybe laced with something) could plausibly accidentally kill a new user almost immediately, perhaps someone drunk who tries a single snort.

Lactose is commonly used to cut cocaine and if a user has a severe dairy allergy there might be enough in a single line of cocaine to trigger a fatal allergenic reaction.