 Pepto-Bismol's there. Pepto-Bismol provides fast, effective relief from nausea, heartburn, indigestion, upset stomach, and diarrhea. All the things that can happen unexpectedly on vacation. So before you travel, pack the Pepto. Pepto-Bismol. When you have nausea, heartburn, indigestion, upset stomach, diarrhea. Use as directed. Keep out of reach of children.