According to the seller, Nerve Zen Ultra includes a 60-day money-back guarantee from your purchase date.
Contact the official support team within the guarantee period. Review the current terms and conditions on the seller's website before purchasing, including the return process and timeframe for initiating a refund.
Return address on file: 11870 62nd St. N, Largo, FL 33773. Confirm this is still current directly with the seller before mailing anything back.