MD/PROCESS® hopes that every single customer is happy with their purchase of GlucoBerry™. However we understand that on occasions the product may not be for you. We stand behind our 180-day money-back guarantee 100%. Simply return any remaining unopened bottles to us within 180 days of your order and we will issue a full refund. Opened or empty bottles do not need to be returned. Please note: the guarantee term is based on the date of your order, and not the delivery date.