Nervetin is backed by the brand's own stated 90-day, 100% money-back guarantee from the date of purchase. Per the stated policy, you can return the bottles — even empty ones — within 90 days for a refund minus shipping and handling.
To initiate a return, contact the official retailer's customer support using the information provided at checkout and request the return address before mailing anything back. Refund processing times and conditions are set and honored by the official retailer, not by this website — confirm the current, exact terms before you order.