Or how about Harper's radium chocolates with the tasty tagline: 'They Glow in the Dark.' I have not been able to find out anything about these and tempted to say this is a fake. But Burkbraun radium chocolate definitely existed and was heavily advertised.

I can't find any more examples of radioactive chocolate but it turns out there is a song for every occasion! youtu.be/S99C8TFhIbk?...