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antidote

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.

antidote

Remedy to counteract the effects of a poison or toxin. Administered by mouth, intravenously, or sometimes on the skin, it may work by directly neutralizing the poison; causing an opposite effect in the body; binding to the poison to prevent its absorption, inactivate it, or keep it from fitting a receptor at its site of action; or binding to a receptor to prevent the poison's binding there, blocking its action. Some poisons are not active until converted to a different form in the body; their antidotes interrupt that conversion.


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He sold a drug, pretending that it was an antidote to all poisons, and obtained a great name for himself by long-winded puffs and advertisements.
It came into my mind when I began to chew it that perhaps it might be that venomous herb against which no antidote had yet been found, but persuading myself afterwards that my fears were merely chimerical, I continued to chew it, till a man accidentally meeting me, and seeing me with a handful of it, cried out to me that I was poisoned; I had happily not swallowed any of it, and throwing out what I had in my mouth, I returned God thanks for this instance of his protection.
But I have now your assurance at my back, and shall put it in my book, and make it an antidote to my black humours.
 
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