Most calcium plus D tablets have 200 to 400 IU’s of vitamin D ... Vitamin D supplements usually come in doses of 400 to 2000 IU’s per pill. Look for plain vitamin D supplements with no added vitamin A ...
Vitamin D is widely ... out to about 2,000 IU a day) for up to five years. At the end of the study, data was analyzed from over 16,800 participants who were still taking the tablets.
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