Mithridatium, also known as as mithridate," "mithridatum, mithridatium or mithridaticum, is a semi-mythical remedy with as many as 65 ingredients, used as an antidote for poisoning ...
Etymology: ML mithridatum < LL mithridatium < Mithridatius, of Mithridates VI, said to have become immune to poisons by taking them in gradually increased doses