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Activated charcoal is primarily administered to absorb poisons that are not caustic, making it an effective treatment for certain types of poisoning. Its mechanism involves binding to various toxins in the gastrointestinal tract, thereby reducing their absorption into the bloodstream. This is particularly important in cases of poisoning from substances like medications or recreational drugs, where timely administration can significantly mitigate the level of toxin that enters the system.

It is important to understand that activated charcoal is not suitable for every type of poisoning. For instance, in cases involving caustic substances (like strong acids or alkalis), activated charcoal could worsen the injury, as it doesn't neutralize these harmful chemicals but simply provides a surface for absorption. Additionally, there are certain poisons that activated charcoal is ineffective against, which highlights the importance of knowing when to use this treatment.

Thus, when considering the purpose of activated charcoal, its role in absorbing non-caustic poisons is central to its use in emergency medical situations.