THE DATE ON THE BOTTOM OF THE PRODUCT REPRESENTS THE MANUFACTURING DATE AND PRODUCTS EXPIRE AS FOLLOWS: LiyfBiotic: 2 Years Past Date of Manufacture (DOM) LiyfZyme: 3 Years Past Date of Manufacture (DOM) PuraZyme: 3 Years Past Date of Manufacture (DOM) PuraLiyf: 2 Years Past Date of Manufacture (DOM) Liyf Essentials: 18 Months Past Date of Manufacture (DOM) PuraCleanse: 3 Years Past Date of Manufacture (DOM)