Some of my favorites are radioactive toothpaste, face cream, suppositories, and EYE applicators !!

https://orau.org/ptp/collection/quackcures/quackcures.htm

This is freaking, right out of fallout new vegas

There’s a rather famous case of the effects of Radithor, one  Eben Byers. Byers was an American amateur golf champion who began taking Radithor after injured himself falling from a bed in a traincar. Over the course of two years, it’s believed he consumed about 1,400 bottles of the stuff, believing it gave him a “toned-up feeling” before the extreme weight loss, headaches and the loss of his teeth caused him to stop. When invited to speak to an Federal trade commission about, he was forced to decline due to, as an investigator from the FTC described in their own words, his  “whole upper jaw, excepting two front teeth, and most of his lower jaw had been removed”, and that “All the remaining bone tissue of his body was disintegrating, and holes were actually forming in his skull.”

The Wall Street Journal famously reported about his death with the headline “ The Radium Water Worked Fine Until His Jaw Came Off “