Black Tongue Surprise

I have fallen off the eating right wagon this weekend, and as a result I had a bit of an upset stomach last night. Shane had a couple Pepto-Bismal tablets, so I took them. I felt better and slept pretty good. However, when I got up this morning, I was flabergasted to discover my tongue had turned black as coal overnight. It looked like a horrible fungus covering my tongue. I started brushing my tongue with my toothbrush until I was gagging to get the black off. It still isn't all gone. I Googled black tongue and Pepto and quickly learned this is a common side-effect. It is a scary and gross side-effect too.