Radithor
Radithor was a radioactive patent medicine brand of distilled water containing at least 1 microcurie (37 kBq) each of the radium-226 and 228 isotopes, sold in 1⁄2 US fl oz (15 mL) bottles. In 1932, the illness and death of business magnate Eben Byers was unambiguously linked to his fervent use of Radithor, leading to the collapse of the radium fad and the strengthening of regulatory control of pharmaceutical and radioactive products in the United States.