Ingested poisons are frequently treated by the oral administration of activated charcoal, which absorbs the poison, and then it is flushed from the digestive tract, removing a large part of the toxin. For example, the poison ricin, which is produced from the waste byproduct of castor oil manufacture, has no antidote, and as a result is often fatal if it enters the human body in sufficient quantities. Some other toxins have no known antidote. certain spiders, scorpions, bees, etc.) are only potentially lethal when they provoke allergic reactions and induce anaphylactic shock as such, there is no "antidote" for these venoms because it is not a form of poisoning, though anaphylactic shock can be treated (e.g., by the use of an EpiPen). Some animal venoms, especially those produced by arthropods (e.g. The venom produced by some snakes, spiders, and other venomous animals is often treatable by the use of these antivenoms, although a number do lack one, and a bite or sting from such an animal often results in death. Sometimes, the antidote for a particular toxin is manufactured by injecting the toxin into an animal in small doses and the resulting antibodies are extracted from the animals' blood. Īn antidote is a substance which can counteract a form of poisoning.
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