How to use coupon code?
STEP 1: Select offers or copy a coupon code. Go to the product page and confirm the order.
STEP 2: Follow the GNC payment process. On each page, look for a coupon code or promotion code option on the page. Copy and paste the GNC coupon code into the box and apply it.
STEP 3: Analyze your cart to confirm that the coupon code has been entered correctly and is reflected in your total price. The discount coupon GNC will adjust the total of your order.