Bismuth subsalicylate. 5 Symptom Relief: nausea; hearthburn; indigestion; upset stomach; diarrhea. www.pg.com. www.pepto-bismol.com. Other information: Each 15 ml dose cup contains: magnesium 3 mg, sodium 2 mg. Salicylate 230 mg. Low sodium. Protect from freezing. Avoid excessive heat (over 104 degrees F or 40 degrees C). Tamper Evident: Do not use if printed shrinkband is missing or broken.