Ketchup was once sold as medicine.
Why it is true
In the 19th century in the US, tomato sauce was bottled and sold in pharmacies under the promise of curing indigestion and liver ailments.
Source: Food History
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.