Biochemistry Most potent form of vitamin D is: A 1, 25- dihydroxy cholecalciferol B 7-dihydro cholecalciferol C 25-hydroxy cholecalciferol D Ergocalciferol (Vit. D2) 💡 Explanation Most potent form of vitamin D is: ✓ Correct Answer: A. 1, 25- dihydroxy cholecalciferol