3 ms·

Iocane powder Actually there are a few, though it's definitely not the rule - https://en.m.wikipedia.org/wiki/Mithridatism https://en.m.wikipedia.org/wiki/Mith

• ghurtado 10y ago
  Interesting link. "It is important to note that mithridatism is not effective against all types of poison, and, depending on the toxin, the practice can lead to the lethal accumulation of a poison in the body." "There are only a few, if any, practical uses of mithridatism. " I think that will be my takeaway. In case you didn't know, it looks like Iocane Powder is an imaginary substance: https://en.wikipedia.org/wiki/List_of_fictional_toxins https://en.wikipedia.org/wiki/List_of_fictional_toxins