That movie is expected to arrive in fall 2015, but in the meantime, we're celebrating Christmas Vacation.. In honor of the holiday classic's 25th anniversary, we're catching up with where the cast is now in the gallery above.
It turns out that the active ingredient in Pepto-Bismol (bismuth subsalicylate) contains a chemical called bismuth. When a small amount of bismuth combines with trace amounts of sulfur, a black-colored substance (bismuth sulfide) is formed.
Certain foods, supplements, and medications can temporarily turn stool black, such as: 1  Bismuth subsalicylate (Pepto-BismolÂ®, KaopectateÂ®) 2  Iron supplements. 3  Activated charcoal supplements. 4  Dark foods such as black licorice, blueberries, Oreo cookies, blackberries, grape juice, or blueberries.