All peptides are sent directly to the customer by FedEx overnight delivery from our Sunnyvale, California headquarters. An email is sent to the end-user the day of the shipment confirming the shipping and including a FedEx number so they can trace the box if necessary. Each peptide is supplied at room temperature with a desiccant to remove any extra moisture. Numerous studies have shown that transporting peptides under these circumstances has no effect on their viability or shelf-life. However, the generic peptides must be kept at -20 C or lower as soon as the end customer receives it.