Ketchup was originally medicine:

"...you’d be surprised to know that ketchup only had tomatoes in it starting 1834. Before, ketchup was made with a mix of fish and mushrooms. When Dr. John Cooke Bennet added tomatoes to the mix, he claimed that the antioxidants gave it a medicinal property. He had a pill salesman turn his tomato ketchup into pills and claimed it could treat diarrhea, indigestion, jaundice, and rheumatism."