180-Day Guarantee
The Nitric Boost package art lists a 180-day money-back guarantee. That window is meant to let you try the powder and still ask for a refund if it is not what you wanted.
If you are inside the refund period printed on your order, contact support, say you want a refund, and keep your receipt. The team can tell you how to send the product back. The checkout page you see at the time of purchase is the final word if its wording differs from this page.
Support details are on the contact page.