The most potent form of vitamin D is
1,25 dihydroxy cholecalciferol is the metabolically active form of vitamin D. It helps in the absorption of calcium and phosphorus in the gut, and promotes bone dissolution and mineralization, thereby increasing serum calcium and alkaline phosphatase activity. Ref: Page 127; Ghai essential pediatrics; 6th edition
Ergocalciferol (Vit. D2)
7 dihydroxy cholecalciferol
25 dihydroxy cholecalciferol
1,25 dihydroxy cholecalciferol
Nutrition