Evergreen Immune+ - 100 Capsules - CLEARANCEFunctions Provides immune support ant tonifies wei (defensive) qi. This product in our clearance section has an expiration date of 05 2024; however, because it is a dry product, it is still viable and potent. 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 in a cool, dry place.