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Thorne has an A rating from Australia’s Therapeutic Goods Administration, widely recognized as the toughest regulatory agency in the world. Only a handful of U.S. companies have achieved certification, and Thorne is the first U.S. nutritional supplement company to be fully certified.

Thorne Vitamin D-5000 is designed as a dietary supplement to help individuals meet their vitamin D requirements. Vitamin D3, also known as cholecalciferol, is the form of vitamin D that is synthesized in the skin when exposed to sunlight and is important for various bodily functions.

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Zinc is crucial for the proper functioning of the immune system. It helps in the development and function of immune cells, and a deficiency in zinc may impair the immune response. Zinc is involved in the synthesis of DNA, cell division, and overall tissue repair. It plays a role in the healing of wounds and maintaining the integrity of the skin. Zinc has antioxidant properties, helping to protect cells from oxidative stress and damage caused by free radicals.