Visited this GNC a few times now and it’s ok. The staff are friendly and willing to help yet I noticed they have a smaller inventory than the other 2 frequent in Tracy and it takes longer to get now products in also. Otherwise there’s everything you need from Sports Nutrition(Protein Powders, Pre Workout, Quest Bars ect) to Vitamins and Herbs, even a few Nut Butters. Prices are fairly high but if you become a member you can get some great deals and they regularly have bogo 50% off. *TIP* Located in the same plaza /side as Menchies.