“Physician-founded in 1990, Doctor’s Best is a science-based nutritional supplement company, offering more than 200+ products, made primarily with branded ingredients that are thoroughly researched, manufactured to the highest quality standards, and rigorously tested every step of the way— from raw materials to finished product. We use only cGMP-certified manufacturing facilities. Doctor’s Best is committed to transparency through education and communication and strives to be crystal clear in what we offer, why and how we offer it.” – DrBVitamins.com, Official Website Doctor’s Best, headquartered in Irvine, CA. Doctor’s Best designs and formulates top of the line products. With some of their largest customers being online-based companies such as Amazon and I-Herb, Doctor’s Best relies on superior forecasting software for accurate planning.