Natural Factors develops condition-specific supplements to address some of the most common health concerns. The company is based in Canada, where they have their main office and state-of-the-art production facilities, but serves U.S. customers from a sales and distribution center in Everett, Washington. They also have their own farms, dubbed Factors Farms, where they produce the herbs for their formulas, which are harvested by hand and processed within hours at their nearby plant. From protein powders to weight loss formulas, vitamin D to vitamin C, each product that comes from Natural Factors follow a rigorous process to ensure the best quality.