Many people are saying up to 1200 units every single day. Why? Because you need that much D to absorb the calcium, you need that much D to have good muscle function. If you have less D in your ...

If found to be Vitamin D-deficient, the health expert can recommend higher dosage for a short period of time. However, the intake should be closely monitored to avoid other health complications.

May increase by 0.5–1mcg at 2–4 week intervals. Adjust dose based on PTH levels: see full labeling. Avoid concurrent Vit. D therapy. Maintain adequate calcium intake. Keep serum calcium times ...