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 – just the D. Too much vitamin A (beyond what you get in your ...
1000 IU (25 mcg) per day increases vitamin D blood levels 10 ng/ml (25 nmol/L). 2000 IU (50 mcg) per day increases vitamin D blood levels 20 ng/ml (50 nmol/L). If the vitamin D blood test was 30 ...
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