A livestock feed supplement in which a core particle containing sodium metabisulfite and at least one binder is enrobed with an enteric coating, wherein the thickness and composition of the coating protects the sodium metabisulfite from decomposition to sulfur dioxide in an aqueous acid stomach environment. Also disclosed are a method of delivering sodium metabisulfite to the lower gastrointestinal tract of an animal, and a method of delivering an antidote to relieve the toxic effect of vomitoxin in an animal, by administering to the animal the livestock feed supplement.
