As of May 2026, the best GNC promo code is SAVE30 for 30% Off. CouponHub has 2 active GNC codes with a 95% success rate, admin verified.
Browse the codes below and click "Copy & Go" to apply at checkout.
30% off sitewide for Pro Access members
Buy one get one 50% off select items
Combine a GNC promo code with cashback portals and credit card rewards for maximum savings. Enter your order total to see the full stack.
Cashback rates are approximate and vary by store. Credit card rewards depend on your card issuer and category. Coupon and cashback typically stack, but one promo code per order at most stores.
GNC is an online retailer. At CouponHub, we track and verify all available GNC promo codes and discount offers. Our team reviews every code before it goes live, and our community votes on whether codes worked at checkout - giving you confidence that the codes listed here are current and functional.
To get the best deal at GNC, check this page before every purchase. New codes are added daily from our community of deal hunters. Sign up for GNC's email newsletter for exclusive subscriber-only discounts and combine those with the promo codes listed above for maximum savings.
CouponHub Editorial Team
Verified savings experts · Updated May 21, 2026