Pediatrics The most potent form of vitamin D is A Ergocalciferol (Vit. D2) B 7 dihydroxy cholecalciferol C 25 dihydroxy cholecalciferol D 1,25 dihydroxy cholecalciferol 💡 Explanation The most potent form of vitamin D is ✓ Correct Answer: D. 1,25 dihydroxy cholecalciferol