I ran across this while googling "Pepto Bismol & UC" because I take it sometimes and wanted to see if that was a good/bad idea. Turns out it helps people with microscopic colitis. Hmmm. Sounds interesting. Apparently PB also kills some bacteria as well as decreases D.
www.henryford.com/body.cfm?id=37911(you have to scroll down a little to find the question about
Pepto)