Vitamin D is a fat-soluble secosteroid essential for calcium and phosphate homeostasis, bone health, and immune function. It exists in two primary forms: vitamin D3 (cholecalciferol), synthesized in the skin upon UVB exposure, and vitamin D2 (ergocalciferol), obtained from plant sources.
Vitamin D enhances intestinal absorption of calcium and phosphate, promoting bone mineralization and maintaining serum calcium levels.
Vitamin D modulates innate and adaptive immune responses by influencing the activity of immune cells such as macrophages, dendritic cells, and T lymphocytes.
Vitamin D influences gene expression related to cell growth, promoting differentiation and inhibiting proliferation, which may reduce cancer risk.
| Compound | Benefit | Evidence | Confidence |
|---|---|---|---|
| Cholecalciferol | Supports bone health | strong | 95% |
| Ergocalciferol | Supports immune function | moderate | 85% |
Vitamin D3 is the active form of Vitamin D, enhancing absorption and effectiveness.
Processed products often include stabilizers or carriers that enhance vitamin stability.
Vitamin C enhances the immune-boosting effects of Vitamin D.
Purified water is used as a solvent to ensure even distribution of ingredients.
Stevia is used as a natural sweetener, enhancing palatability without added sugar.
Compound formulations allow for multiple nutrients to be delivered in one dose.
Magnesium stearate is used as a flow agent to improve manufacturing efficiency.
Zinc oxide supports immune function, complementing Vitamin D's effects.
Comprehensive overview of vitamin D's functions and metabolism.
Detailed review of vitamin D's production, metabolism, and mechanisms.
Explores vitamin D's role as an immunomodulator.