Vitamin D promotes the absorption of Calcium and Phosphorus into our bones and teeth. All three are very much interrelated in our body. Research has indicated harmful and, possible toxic, effects from excess amounts of Vitamin D (usually from supplements). The harmful effects can be very similar to deficiencies of the Vitamin: weak muscles, weak bones, excessive bleeding, and kidney stones. It is recommended not to exceed 400 IU per day of Vitamin D for young children (due to growing bones) and 200 IU per day for over 25 years old.
I suggest you get blood levels on Vitamin D, Calcium, and Phosphorus so your MD can properly treat your son’s condition.
Thank you for visiting the forum and asking your question.
Thank you for the speedy reply. A blood test seems simple enough to get some clarity. Thanks again!