2. an agent that does this; examples are a strong solution of salt,
mustard water, powdered
ipecac, and ipecac syrup. Emetics should not be used when lye or other strong alkalis or acids have been swallowed, since vomiting may rupture the already weakened walls of the esophagus. Examples of such acids and alkalis are sodium hydroxide (caustic soda), potassium hydroxide (caustic potash), and carbolic acid. Emetics should also be avoided when kerosene, gasoline, nail polish remover, or lacquer thinner has been swallowed, since vomiting of these substances may draw them into the lungs.