An antidote is a substance that counteracts the effects of a poison or toxin. It works by neutralizing the harmful effects of the poison, either by binding to it, blocking its action, or reversing its effects. Antidotes are crucial in medical emergencies, as they can save lives when someone has been exposed to dangerous substances. Different types of antidotes exist for various poisons. For example, activated charcoal can absorb certain toxins in the stomach, while naloxone is used to reverse opioid overdoses. Knowing the appropriate antidote for a specific poison is essential for effective treatment and recovery.