
Welcome to Medical Mondays, where medical facts for the purposes of fiction are discussed
ad nauseum and my readers are left only slightly vertiginous.
Today, as adjunct to last week's post on methanol poisoning, I discuss the use of charcoal as an antidote.
Way back in medical school, I remember making my way through the ER and noticing a sickly looking young man with suspicious black smears around his mouth. He looked like he'd just eaten a plate of Oreo cookies with his hands tied behind his back. I asked the senior resident what was going on.
"Overdose. He just finished his activated charcoal slurry."
Ah. Not Oreos. (Though I'm certain Oreo cookies are highly effective antidotes for some things. The munchies, for one. And lonely glasses of milk.)
Charcoal is the result when wood (usually) is heated in the absence of air and incompletely burned. Obviously, it can then be used as a fuel, but its got a lot of other uses, such as in filtration (it's in my aquarium filter right now, and probably in your Britta filter at home).
Medicinally, it has been consumed for centuries to aid in digestion and to adsorb (not a typo—that's aDsorb, which means molecules stick to it) toxins and poisons.
Red colobus monkeys have been known to eat charcoal to help with their digestive ailments, since their leafy diet is high in cyanide.
Charcoal biscuits were available in 19th century England for flatulance and stomach problems.
Activated charcoal is charcoal that's been treated to make it extremely porous and therefore give it a huge amount of surface area for adsorption. One gram of activated charcoal has the surface area of 500 square meters. That's a lot of room on which toxins can bind.
I could imagine reading a scene where burnt wood was eaten after fear of being poisoned. That would be quite a MacGyver move in a book, wouldn't it?
Please keep in mind this post is for writing purposes only and is not to be construed as medical advice! (See sidebar disclaimer)
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