Nature’s Best Relief uses the United States Postal Service (USPS). We can easily change your order to be shipped via UPS or FedEx at current shipping charges. Overnight deliveries and Next Day Air are available as well. Please contact us at the number listed below if you have special shipping requests. All orders are shipped no later than 1 business day from your order placement. Many orders ship the same day. For back orders, we will notify you via email on an anticipated delivery date.