Ketchup was sold in the 1830s as a medicine for diarrhea.
Why it is true
In 1834, a physician named John Cook Bennett declared that tomatoes could cure diarrhea, indigestion, and jaundice. He turned the ketchup recipe into pills and sold it as medicine, a practice that lasted until the 1850s before it became a simple condiment.
Source: Smithsonian
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