Bismuth subsalicylate is a medication commonly used to treat digestive issues, particularly nausea, diarrhea, and indigestion. It works by coating the stomach and intestines, providing a protective barrier that helps reduce irritation. This compound is often found in over-the-counter products like Pepto-Bismol. In addition to alleviating gastrointestinal discomfort, bismuth subsalicylate has mild antibacterial properties, which can help combat certain infections in the digestive tract. However, it is important to use it as directed and consult a healthcare professional if symptoms persist or worsen.