<http://schema.org/description>
"Can taking over-the-counter medication bismuth subsalicylates, such as Pepto Bismol or Kaopectate, cause your stool to turn black?"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.verywell.com/pepto-bismol-or-kaopectate-and-black-stool-1943022>