Special:Badtitle/NS90:Trope Workshop talk:Made on Drugs/What counts as a "drug"?

I was thinking we should define "drug". "A drug, in the broadest term, is a chemical substance that, when ingested, has a high biological response to quantity ratio compared to regular foods". I was thinking, for the purposes of this trope, only psychoactive drugs count. For example, if someone is on advil, it doesn't count.