Pineal Guardian products are backed by a 100% money back guarantee for 365 full days from the date of original purchase. If you are not totally and completely satisfied with this product; your results or your experience in the first 365 days after purchase, Just let us know by calling our toll free number or sending us an email and we will give you a full refund (less shipping and handling) within 48 hours after returning the product. That’s right, just return the product, even empty bottles, at any time within 365 days of your purchase and you will receive a full refund, no questions asked (less shipping and handling).