Can be used to help replace the intestinal bacterial flora which can be disturbed by stress conditions such as traveling, change in diet or environment, show or sports performance , sickness, worming, or oral antibiotic therapy. This is a clearance item. It is a discontinued item that is no longer sold. The package is not sealed and it has no expiration date on the label, however we have no way to guarantee the quality of the contents. No refunds/returns on clearance items.