Expiration dates range from 12 to 24 months from the date of manufacture. Be sure to read the storage instructions for each product. Our NAD Gold product, for example, should be refrigerated upon receipt. It leaves our warehouse frozen and is shipped with an icepack. If your product arrives warm, do not worry. Our heat-sensitive products can be exposed to high temperatures for short periods of time (5-7 days) with no damage to the product.