It’s safe to take a Pepto Bismol tablet that has expired, but you should not take more than the recommended dose.

According to Drugs.com, the active ingredient in Pepto Bismol tablets is bismuth subsalicylate, which relieves symptoms of indigestion and diarrhea. It also includes a small amount of salicylic acid, which helps relieve pain from rheumatoid arthritis and other conditions.

Bismuth subsalicylate is an antacid that works by neutralizing stomach acidity. Salicylic acid is a pain reliever that reduces inflammation by reducing the ability of white blood cells to move through tissues, according to Drugs.com.

Pepcid and other brands of chewable antacid tablets contain bismuth subsalicylate and are often used for upset stomach or diarrhea caused by food poisoning or stomach flu symptoms that come on suddenly after eating contaminated food or drinking contaminated water while traveling abroad.

Last modified: October 26, 2022