Antacids (Alka-Seltzer®, Tums®) relieve heartburn, sour stomach and acid indigestion. Bismuth subsalicylate (Pepto-Bismol®) relieves upset stomach, indigestion, nausea, heartburn and diarrhea.

*Alka-Seltzer® is a registered trademark of Bayer HealthCare LLC. Tums® is a registered trademark of GlaxoSmithKline. Pepto-Bismol® is a registered trademark of Procter & Gamble.