Using your code is pretty easy. Press the "Show Coupon Code" button to see a code. Copy it and be ready to use during check out.
1. Go to gnc.com.
2. Select the category you want from the different ones offered by the site.
3. Click on what you want when you find it.
4. On the next page is an image of your item, pick a convenient quantity. Click on “Add to cart”
Click on “Go to cart” on the pop up window. When the new page with your order summary opens look out for the field for your code because there are other fields, when you find it, type it, click on “Apply” and select a checkout option.
That would be all