Must buy 2. Offer valid at select GNC stores. One-time use only per person. One coupon per person. Coupon must be presented at time of purchase. Redeemable only in the U.S. Void where prohibited, taxed or restricted by law. Does not combine with Member Prices. Void if copied or transferred. Coupon may not be reproduced, copied, purchased, traded or sold. Internet distribution strictly prohibited. See store for more details.