There is a lovely little business very close to my office called Triangle Nutrition, located on Lead Mine Road near Baileywick. A locally-owned and operated establishment, they offer a wide variety of nutritional supplements, healthy food for pets, gluten-free products, reference books, and more. (I especially like their section of my favorite brand, of incense Aura Cacia)
Their staff is very knowledgable on herbs and vitamins. If they don’t carry an item you need, they are more than happy to order it for you, or they will find another local business that carries it and refer you to them. I have found their prices on supplements to be very reasonable, in fact some things are cheaper than what you would find at Whole Foods or Earth Fare!
When my clients are looking for a product, I always send them to Triangle Nutrition. I highly recommend you stop in for a visit.