Similar to vitamin D2, vitamin D3 undergoes metabolic processes in the liver and kidneys to become biologically active. In the liver, vitamin D3 is hydroxylated to form 25-hydroxyvitamin D3 (25(OH)D3) ...
The recommended daily intake of 10 micrograms is based on estimates of the amount required to keep blood levels of serum 25-hydroxyvitamin ... are best. Is D2 or D3 a better supplement?
Vitamin D is available in two forms: plant-derived vitamin D2 or vitamin D3 from animal-based foods (D3 is also produced when skin is exposed to sunlight). Supplements and fortified foods contain ...
Important: Vitamin D supplements come in two forms: D3 and D2. Studies suggest D3 may be more efficient at raising your vitamin D blood levels, but vegans should choose D2 supplements since they ...