In the early 1900s, radium was a highly popular additive in all manner of products. It was The Thing for curing what ailed you, as demonstrated in this excellent ad clipped from a 1921 paper:
Find more like this with a search or browse on Newspapers.com.
Like this post? Try one of these:
- The Radium Girls
- “Magnetism Affects Watch”
- Isolating Isletin (a much different look at 1921 medical advancement)