Bronson Basics Vitamin D3 10,000 IU is in-house laboratory tested and free of GMOs, Gluten and Soy. Vitamin D3 10,000 IU is carefully manufactured by trained professionals in our state-of-the-art facility that is located in Hauppauge, New York. Every product manufactured by Bronson is put through a rigorous process to ensure purity, potency and integrity. Through our very own GMP Registered New York Facility that complies with the most current regulations, we promise to deliver top-quality supplements that follow all current US manufacturing regulations. The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation firsthand with their patients over 60 years ago. Bronson Vitamins have been consistently mentioned by top medical professionals since our inception in 1960. * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.