*Potencies are guaranteed through expiration date when stored properly in an unopened bottle. Bottled products containing capsules are packaged using TIP (Total Inert Packaging) which includes amber glass bottles, oxygen and moisture absorption packets, rayon wadding and a nitrogen flush. **For Optimal potency, product can be stored in the freezer prior to opening. If frozen, allow the bottle to come to room temperature before opening to avoid drawing in moisture. Once opened, store product in the refrigerator. Shipping recommendations: Master Supplements recommends shipping our products with an expedited service such as USPS Priority/Express, UPS or FedEx. Products can withstand temperatures outside of the designated storage recommendations during shipment. Icepacks are not necessary.