The compound of this element most commonly in use for medicinal purposes is that known as tartar emetic—an exceedingly active poison. Minute doses are sometimes prescribed in order to induce vomiting, and in bronchial complaints to produce expectoration.

The symptoms and treatment are practically on a par with those laid down for arsenic. Vomiting and extreme depression of the vital powers are specially significant symptoms.

Both arsenic and antimony have their special antidotes, though even these are of very doubtful efficacy.