GNC is located at 81A S Main St, Marlboro, NJ. This business specializes in Nutrition & Supplements. GNC is open Mon, 10am-7pm; Tue, 10am-7pm; Wed, 10am-7pm; Thu, 10am-7pm; Fri, 10am-7pm; Sat, 10am-6pm; Sun, 11am-4pm and accepts All Major Credit Cards, American Express, Cash, Discover, Mastercard and Visa.