How Do Painkillers Know Where the Pain is?

Transcript

let me get this straight I hurt my elbow I swallow a pill it goes to my stomach then somehow it gets from my stomach to my elbow and the pain is gone what big farm is calling medicine seems suspiciously like witchcraft but fear not TI only science so how does the painkiller scientifically know where the pain is let's take a look at the adventure of... Read More