poison.org

b9w5E TIL about a French chemist named Bertrand, who drank 5 grams of arsenic trioxide (a very poisonous substance) mixed with activated charcoal, just to demonstrate the adsorptive properties of activated charcoal and survived.
1aXaD TIL that after bitter flavoring was required to be added to antifreeze to prevent children and animals from accidentally drinking it, the bittering had no effect and there was no reduction in poisonings.
N7m7M TIL that cherry seeds contain a chemical called amygdalin, and that eating a cherry seed will introduce a small amount of cyanide into your system, enough of which can kill you.