Vegan Vitamin D3 1,000,000IU Oil
- Organic specification available
Vegan Vitamin D3 100,000/500,000IU Powder CWD
- Vegan. Cold water dispersable
Vitamin D3 100,000IU Beadlets GF
- Double shell. Special for tablet
Vitamin D3 100,000IU Powder CWD
*The following content is generated by AI and is for reference only.
Vitamin D3, chemically known as cholecalciferol, is a fat-soluble secosteroid essential for human health. Its molecular formula is C27H44O, and it is identified by the CAS number 67-97-0. This compound occurs naturally when the skin synthesizes vitamin D from sunlight exposure but is also available as a dietary supplement derived from lanolin or lichen sources. Unlike its precursor, Vitamin D2 (ergocalciferol), D3 is the more biologically active form preferred by the body for maintaining optimal physiological functions.
The primary role of Vitamin D3 is regulating calcium and phosphorus homeostasis in the blood. It facilitates intestinal absorption of these minerals, which is critical for bone mineralization and preventing conditions like rickets in children and osteomalacia or osteoporosis in adults. Beyond skeletal health, emerging research highlights its significance in immune system modulation, reducing inflammation, and supporting muscle function. Deficiency is common globally due to limited sun exposure, leading to widespread use in supplements, fortified foods, and pharmaceutical formulations.
In industrial applications, high-purity Vitamin D3 serves as a key ingredient in animal feed to prevent metabolic bone diseases in livestock and poultry. In the pharmaceutical sector, it is formulated into tablets, capsules, softgels, and liquid drops to treat hypocalcemia and manage parathyroid disorders. The molecule acts as a pro-hormone; once ingested or synthesized, it undergoes hydroxylation in the liver and kidneys to become calcitriol, the active hormonal form that binds to nuclear receptors to regulate gene expression. Safety profiles are well-established, though excessive intake can lead to hypercalcemia. Consequently, standard dosage guidelines emphasize moderation. As a vital nutrient, Vitamin D3 remains a cornerstone of preventive medicine and public health strategies worldwide, bridging the gap between nutritional science and clinical therapy to ensure robust physical development and long-term wellness.