Name: Vitamin D
Class:
Mechanism: Facilitates intest. absorption of Ca2+ and PO43-, and mineralization of bone.
Absorption:
Dist.:
Metabolism.:
Excretion, t½:
Toxicity/S.E.s: Megadose—hypercalcemia.
Utility:
Special Features: Quasi-vitamin—synthesized in humans. RDA inversely proportional to amount of UV light exposure. Deficiency ® rickets (kids), osteomalacia (adults).