How do I redeem my GNC discount? Mary Updated January 12, 2017 02:03 Follow • Private Online Store: Shop our private GNC online store in Members Only. Your Veterans Advantage discount is pre-loaded. Related articles How do I redeem my AMC Theatres/Regal Cinemas discount? How do I redeem my Target.com discount? How do I redeem my gym membership discount? How does the Universal Orlando Parks and Resorts discount work? How do I redeem my Promotive discount? Comments 0 comments Please sign in to leave a comment.