"Radio-activity is neither a drug nor medicine. It is an element of nature—and therefore accepted as harmoniously in the body as sunlight, fresh air, or the vitamins in foods, and is of like importance."
"it is but common sense to restore it to water that has lost it just as we restore oxygen to a stuffy room by opening a window"
"One should drink water from the REVIGATOR at all times and at least eight full glasses per day."
It's the Revigator; a revolutionary health product from the 1920s. It's just a gallon-sized water jar, really... only it's lined with a thick layer of uranium ore. The "vigor gas" it adds to water is radon, a product of uranium decay.
Here's a PDF file of the leaflet quoted above. It's funny because it's so sincere. And, as its ex-owner points out, it does read disturbingly like the "alternative medicine" leaflets of the present.
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And similar things are still happening today:
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