Doctor's Best Magnesium High Absorption

Doctor's Best High Absorption Magnesium is a popular dietary supplement known for its 100% chelated lysinate glycinate formula, which is designed to improve bioavailability and gastrointestinal tolerance. The brand was originally founded in 1990 by a physician in the United States, specifically in San Clemente, California. Its commitment to science-based nutrition helped it grow into a widely recognized name in the health and wellness industry.

In 2015, the brand underwent a significant ownership change when the Xiamen Kingdomway Group, a major Chinese nutritional ingredient manufacturer, acquired a majority stake. This was followed by a full acquisition where Kingdomway became the ultimate owner. Despite this shift in ownership to China, the company maintains its operational headquarters in Tustin, California. Its products are typically manufactured in the United States at Current Good Manufacturing Practice (cGMP) certified facilities, though the raw raw materials and nutritional ingredients are often sourced from a global supply chain, including China.

Currently, as of 2026, Doctor's Best continues to operate as a wholly-owned subsidiary of Kingdomway USA Corp. under the broader umbrella of the Xiamen Kingdomway Group. The brand has expanded its portfolio recently, including the acquisition of other wellness brands like Viactiv, further solidifying its position as a dominant player in the American retail and e-commerce supplement market.