Please take note: This product's expiration is past its best use date. But it has been tested repeatedly by a third party laboratory to ensure that it is still of highest quality, and safety. This toothpaste is safe to use as directed. It is our belief that it is as of the same quality as the day it was first manufactured. A Groundbreaking Fluoride-Free Formula, Superblue Fluoride-Free Toothpaste™ is loaded with iodine and an array of other compounds. In working with our team of dentists and formulation scientists, it was essential that Superblue Fluoride-Free Toothpaste™ contained these natural ingredients: Xylitol – An essential ingredient in our revolutionary formula. Iodine – Iodine was specifically chosen by our team of dental experts as one of the primary ingredients in Superblue Fluoride-Free Toothpaste™. Betaine – Derived naturally from beets, betaine is also known as trimethylglycine (TMG). Peppermint Oil – Peppermint is a hybrid mint cross between watermint and spearmint that is well known for its fresh aroma. Limited stock available, last inventory remaining.