auranofin

noun

au·​ran·​o·​fin ȯ-ˈra-nə-fən 

: a gold-containing compound C₂₀H₃₄AuO₉PS taken orally in the treatment of rheumatoid arthritis

Orally administered gold (auranofin), although less toxic than the injectable forms, does not appear to be sufficiently efficacious to replace parenteral preparations.

—Edward D. Harris, Jr., The New England Journal of Medicine

Note: Auranofin is marketed under the trademark Ridaura.