Hello, i took pepto-bismol twice on thursday and once on friday, but i am still having black stools. today is monday. is this normal?

See your doctor: Would expect black to be gone by now. Best to make an appointment to see your doctor.

Black stools: can be indicative of poorly digested food or excess fat in your stool - most seriously, they are associated with bleeding in your gastrointestinal tract. Epigastric burning in concert with black stools warrants an evaluation by a doctor.