Doctor’s Best

● Launched 1990 by a physician, USA (Tustin, CA) . Now part of KingdomwayUSA/NBTY.

● Science-driven mainstream supplement brand. Mid-range positioning.

● Strengths: Focus on research-backed ingredients, branded ingredients (e.g. BioSil,Sunfiber). Co-founder Dr. John Christopher laid emphasis on evidence-basedformulations. Uses health professional input.

● Range: Broad vitamins/minerals (including branded forms of B12, D3, Magnesium),specialty products (lutein, CoQ10, methylfolate, boron chelates, gut-health formulas).

● Manufacturing/Compliance: All products made in U.S. cGMP facilities . NSF GMPaudits.