CHARLES BACH / SCIENCE PHOTO LIBRARY CHARLES BACH / SCIENCE PHOTO LIBRARY
Alka-Seltzer tablets and packaging. Alka-Seltzer tablets are used to treat indigestion, heartburn, and associated headaches and pain. These tablets are Extra Strength (XS) ones that contain aspirin (relives pain), sodium bicarbonate (neutralises excess acid in the stomach), caffeine and citric acid. The tablets are added to water, where they effervesce (as seen on packaging) as they dissolve in the water before being drunk. Alka-Seltzer is a BayerCare over-the-counter (OTC) product.
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