Had nausea + stomach cramps thurs night and took 30 ml pepto dose. each morning since my stool is black. today is sunday. the stool has form (not watery) and doesnt smell worse than normal. no nausea or cramps now. how long will it last?

The components in pepto can turn your poop black while it remains present in your system. It would be expected to clear out in 2-4 days.

Pepto-Bismol is very well known for turning the stool dark. Normally it does not smell foul when it is due to Pepto-Bismol, as opposed to the dark stool caused by blood, which is very foul smelling and tarry. The Pepto-Bismol should be out of your system within a few days. Good luck.