One could say this is how we weed out the inferior low IQ and stop them from breeding. Natural selection sort of thing.
I remember when a few dumb cocksuckers died from taking too many Stackers containing ephedrine. But hey, don't blame the idiots who can't read the bottle... let's go after the supplement company and ban the ingredients.
Meanwhile, if you take just about too much of anything you can die. Like aspirin. Perfectly fine in recommended dosages, but lethal at an excessive amount.