An antidote is a drug, chelating substance, or a chemical that counteracts (neutralizes) the effects of another drug or a poison.
There are dozens of different antidotes; however, some may only counteract one particular drug, whereas others (such as charcoal) may help reduce the toxicity of numerous drugs. Most antidotes are not 100% effective, and fatalities may still occur even when an antidote has been given. Some examples of antidotes include:
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