Products in our clearance section are past the expiration dates provided by manufacturers.  However, because these are dry products, they are still viable and potent past that date.  Oils or oil-based products should not be used past their expiration date, but products that are dry supplements (herbs, vitamins, minerals, etc.) remain viable and shelf-stable for many years as long as they are stored properly (in a cool, dry place) and do not come in contact with moisture.  All of our clearance products meet this criteria.