General Nutrition Center 80 Cabrillo Hwy N, Half Moon Bay, CA94019 General Nutrition Center (GNC) specializes in nutritional products and supplements, and is the only dedicated store of…More its type in Half Moon Bay. It carries a large selection of vitamins, minerals, herbal and other specialty supplements. One section of the store is devoted to women's nutrition and wellness, and includes a nice choice of herbs and essential oils and natural skin care products. There are a variety of protein powders displayed in the pro-performance section and healthy snacks, power bars and drinks for sale. Regular shoppers will benefit from signing up for a club discount card and gift cards are available.