This potent drug, which has played so great a part in ancient and modern times as a poison to human beings, is comparatively innocuous to horses. Its uses are referred to in another chapter (see Alteratives, page 12), but poisonous doses have rarely been given, and when this has happened it has been from drenching by mistake with the liquid chloride or "butter" of antimony, as it is called. The effects then are of a corrosive character, hydrochloric acid being the active ingredient.

Symptoms

Those of corrosive poisoning, sweating, purging, and prostration being the most marked.

Treatment

Should be the same as for corrosive or irritant poisons.

If a sufficient dose of antimony were taken to prove poisonous to a horse, the treatment would consist in giving tannin and gallic acid, which would form with it insoluble and harmless compounds. Decoctions of oak or elm bark, which contain tannin, may be used in the absence of the active principles themselves.