Pharmakon is an ancient Greek word that can mean remedy and poison —sometimes both at once. It’s often used in philosophy to describe something whose effect depends on context or dose.

Quick scoop

  • In medicine , it can mean a drug or medicinal substance.
  • In critical theory , especially in Derrida’s reading of Plato, it points to a thing that is ambiguous : it can heal, harm, or both.
  • The related Greek term pharmakos refers to a ritual scapegoat or sacrifice.

Simple example

Think of a medicine that helps at the right dose but becomes dangerous if misused. That’s the basic “pharmakon” idea: the same thing can be cure or harm.

If you want the shortest definition

Pharmakon = remedy + poison + ambiguity.