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Etymology: Gk, physis + logos + anti, against, dotos, that which is given
a drug that has the opposite effect on the body from that caused by a poisonous or toxic substance.
an agent that counteracts a poison.
one that neutralizes the poison by changing its chemical nature.
one that prevents absorption of the poison.
one that counteracts the effects of the poison by producing opposing effects.
a mixture formerly recommended as an antidote when the exact poison is not known. There is, in fact, no known universal antidote. Activated charcoal is now being used for many poisons.