What is "tetrapharmakos"

The Tetrapharmakos "four-part remedy" is a summary of the first four of the Κύριαι Δόξαι (Kuriai Doxai, the forty Epicurean Principal Doctrines given by Diogenes Laertius in his Life of Epicurus) in Epicureanism, a recipe for leading the happiest possible life. They are recommendations to avoid anxiety or existential dread.

The " tetrapharmakos" was originally a compound of four drugs ( wax, tallow, pitch and resin); the word has been used metaphorically by Roman-era Epicureans. to refer to the four remedies for healing the soul.