system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What exactly does Narcan do in the body to stop an overdose?
gpt
In the simplest terms: think of Narcan and an opioid as magnets vying for the same space on a magnetic surface. During its potency Narcan has a stronger pull to the receptors than the opiate and pushes it out of the way so that the Narcan can sit in that “magnetic spot”. However it only lasts for a little while which is why someone can “get high” again after Narcan is administered and why medical treatment is still needed in emergency timing.