NeuroQuiet comes with a full money-back guarantee valid for 90 days from the date of purchase. If you are not completely satisfied with the product or the results achieved within the first 90 days, simply call our toll-free number or send us an email, and we will happily issue a full refund within 48 hours of receiving the returned product. That’s right: simply return the product—including empty bottles—at any time within 90 days of purchase, and you will receive a full refund, no questions asked (minus shipping and handling fees).