Vitamin
Vitamin D3
The sunshine hormone
Cholecalciferol is a fat-soluble vitamin crucial for calcium absorption, immune function, and gene expression. Widespread deficiency makes supplementation important.
Mechanisms
- Calcium absorption
- Immune modulation
- Gene expression regulation
- Bone health
Dosing
Typical dose
2000–5000IU
Timing
Take with fat-containing meal. Test levels to optimize dosing.