The safety claim was central to Radithor’s commercial viability and to the broader ‘mild radium therapy’ category that gave the product its respectable surface within 1920s consumer medicine. The claim is refuted definitively by the empirical course of Eben Byers’s case: progressive osteonecrosis, skeletal collapse, multiple radiation-induced bone cancers, anemia, marrow failure, and death at age 51 after consuming approximately 1,400 bottles over three years. The radium isotopes Bailey marketed are bone-seeking alpha emitters that deposit in skeletal tissue and emit damaging radiation locally over years to decades; no consumption level was safe, but Bailey’s recommended daily dose was lethal on a three-year horizon. Cumulative skeletal burdens above approximately 2 micrograms of radium are fatal; Byers’s autopsy and exhumation analysis (Robley Evans 1965) estimated a total lifetime radium intake of approximately 1,000 microcuries (36+ micrograms equivalent).