It contains no preservatives, artificial flavors, or other additives. It's easy to use, just mix it with drinking water. It's made with a special process to create reduced ionized water, so it hardly changes the taste of the water. Use one pump for every 100cc of water. Replace the water once a day, every day. TAURUS Bodan Oral Care for Dogs and Cats Contents: 240ml Quantity: 1 bottle Expiration Date: October 2026 This is an unused item, but it has been stored at a private residence. Please refrain from purchasing if you are sensitive to such storage conditions.