An antimonial cup was a small half-pint mug or cup cast in antimony popular in Europe during the 17th and 18th centuries. They were also known under the names "pocula emetica," "calices vomitorii," or "emetic cups", as wine that was kept in one for a 24‑hour period gained an emetic or laxative quality. The tartaric acid in the wine acted upon the metal cup and formed tartarised antimony.