Large vitamin store chains such as GNC and The Vitamin Shoppe sell a variety of natural herb supplements for arthritis. Other websites such as iHerb.com also provide herbal supplements for online purchase.
While a variety of resources are available to find natural herbs for arthritis, the Arthritis Foundation suggests purchasing the natural herbs and supplements from large organizations, such as national pharmacies or food chains, to ensure the quality of the herbs. Large retail chains have stringent guidelines for the vitamins and herbs they supply.
WebMD suggests several supplements for arthritis, including omega-3 fatty acids, green tea extract, turmeric, ginger and white willow bark. Some natural herbs are detrimental to other health conditions, so consult a physician before taking any supplements.