this post was submitted on 17 Jul 2023
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[–] [email protected] 20 points 1 year ago (4 children)

Coffee has been around for thousands of years but I'm pretty sure %100 pure caffeine could kill if you ingested enough at once

[–] [email protected] 8 points 1 year ago* (last edited 1 year ago)

It's not the purity, it's the dose, like any chemical the dose makes the poison.

The FDA recommends staying under 5 cups (400 mg) a day to avoid negative effects with an average person.
It says toxic effects can be observed with rapid consumption of 12 cups, or 0.15 tablespoons of pure caffeine. https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much

[–] [email protected] 3 points 1 year ago

This mystery can be resolved by googling 'ld50 caffeine.' ~750mg is toxic and 10,000mg can kill people

The median lethal dose (LD50) of caffeine is estimated between 150 to 200 mg per kilogram but reports of lethal intoxications have been made with doses as low as 57 mg per kilogram. Personally, 300mg is pretty much as far as I want to go.

[–] [email protected] 2 points 1 year ago

Same as cocaine