Overdose occurs at more than 100 times the recommended daily allowance (roughly one bottle of vitamin D tablets per day), over a period of months. Acute overdose requires over 50mg (ten thousand times the RDA). Foods contain low levels, and have not been known to cause overdose. Overdose has occurred due to industrial accidents, for example when incorrectly formulated pills were sold or missing industrial concentrate cans misused as cans of milk.
Hypervitaminosis D
Vitamin D deficiency
Hypervitaminosis A
Skeletal fluorosis
Tumor induced osteomalacia
Secondary hyperparathyroidism
Pseudohyperparathyroidism
Primary parathyroid hyperplasia