mithridate

An antidote against poison, especially a confection formerly held to be an antidote to all poisons.

In old pharmacy, one of various compositions of many ingredients in the form of electuaries, supposed to serve either as an antidote or as a preservative against poison.

An antidote against poison, or a composition in form of an electuary, supposed to serve either as a remedy or a preservative against poison; an alexipharmic; — so called from King Mithridates, its reputed inventor.

A universal antidote against poison