emetikos

Greek emein meant to vomit, and emetikos was the adjective: causing vomiting. In ancient and medieval medicine, emetics were one of the primary therapeutic tools — alongside purges, bloodletting, and sweating. Hippocratic medicine believed disease resulted from imbalances of four humors (blood, phlegm, yellow bile, black bile), and emetics purged yellow bile, restoring balance. Every physician kept emetics in their pharmacopoeia.

Ipecacuanha — a South American plant whose root produces vomiting — became the standard emetic from the 17th century onward, after Portuguese travelers brought it to Europe from Brazil. Brazilian Indigenous peoples had used it as an emetic remedy long before European contact. The word ipecacuanha comes from Tupi: ipe-kaa-guéne, meaning 'small plant that causes vomiting.' The plant gave English the abbreviated word ipecac.

The clinical use of emetics declined sharply in the 20th century as humoralism was replaced by evidence-based medicine. Most modern emergency medicine guidelines do not recommend emetics after poisoning — vomiting can actually spread some poisons further or cause aspiration. Ipecac syrup was removed from American first-aid recommendations in 2003.

Emetic now survives mainly as an adjective in toxicology and pharmacology, and as a metaphor: 'politically emetic' journalism, 'an emetic display of wealth.' The Greek vomiting word has become figurative for anything deeply repellent. The therapy became the insult.