The present invention addresses the problem of providing a composition for the oral cavity, a food product or beverage, and a recalcification agent that have an excellent recalcifying effect on decalcified dental enamel. Provided are a composition for the oral cavity and a food product or beverage which are characterized in comprising sodium chondroitin sulfate and calcium phosphate. Provided is a dental enamel recalcification agent which is characterized in comprising sodium chondroitin sulfate and calcium phosphate as active ingredients.