Is Shizhen's prescription-wormwood foot patch useful?

It's no use, this is a cheap and inferior product that deceives people. For a few cents or even a few hundred cents, some people are fooled. Really speechless. Take wormwood as an example. Everyone in the countryside knows that it is used to smoke mosquitoes, and pigs don't eat it. Does anyone believe that it can cure all diseases by using it as raw material? To put it bluntly, chemical reactions pretend to have everything, which is a lie.