Io Products’ iodized mouthwash is natural, powerful, and comparable to Listerine – at a better cost. We start with filtered water with zero chlorine or fluoride content. We add pure ethanol (about 21.6%), sodium benzoate, and iodine (as polyvinylpyrrolidone-iodine – similar to the surgical antiseptic in structure and concentration). Peppermint stevia help to create a mouth-refreshing and super-effective product that tastes great, works beautifully and prevents cavities and gingivitis. Sold in 16.9 oz large containers as a concentrate; dilute about 1:4 (product-to-water). May prevent coughs, colds and throat infections.