All probiotics we are selling DO NOT NEED TO BE SHIPPED in a cold pack because a few days unrefrigerated is not a problem.Since the product is designed to withstand any heat encountered during transit, WE DO NOT SHIP IT with a cold pack. The products are kept in a temperature-controlled environment at our facility right up until the time they are shipped to customers. In addition, the bottles are hermetically sealed to provide an oxygen barrier that helps prevent oxidation or spoilage.Jarrow Formulas