(Εὔδαμος), is mentioned by Aristophanes (Aristoph. Pl. 884) as a contemporary, and lived therefore in the fifth century B. C. The Scholiast informs us that he was by trade either a druggist or a goldsmith, and that he sold rings as antidotes against poisons.
[W.A.G]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890