Rebamipide 100mg tablets are primarily used to treat and heal stomach ulcers (gastric ulcers) and gastritis (inflammation of the stomach lining), protecting the stomach by boosting mucus, increasing blood flow, and reducing inflammation, while also helping with intestinal ulcers, dry eye (investigational), and NSAID-induced damage. It works by promoting the natural healing factors in the stomach lining, making it useful for erosion, bleeding, and redness.