In 1937, a cheerful raspberry-flavored medicine killed 107 people across the United States, simply because no one was legally required to check if it was toxic before selling it. This episode dives into the elixir sulfanilamide mass poisoning, the regulatory vacuum that allowed it to happen in broad daylight, and the monumental shift in American law that followed.

We explore the “Wild West” of 1930s medicine, where the 1906 Pure Food and Drug Act was essentially a labeling law with no requirement for safety testing. We follow chemist Harold Watkins as he dissolved the antibiotic in diethylene glycol, a chemical used in antifreeze, and the company that tested only its appearance, flavor, and fragrance. The grim biology of kidney failure, a grieving mother’s letter to President Roosevelt, and a fine for mislabeling reveal a broken system.

• Why pre-1937 law inverted the burden of proof, letting drugs reach market untested
• How diethylene glycol metabolizes into diglycolic acid and shuts down the kidneys
• The company owner’s infamous denial of any responsibility for the deaths
• Why the only charge possible was mislabeling, since “elixir” implied alcohol
• How the tragedy forced the 1938 Food, Drug, and Cosmetic Act and pre-market approval