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 ...
The improvements were seen after the children took 50 micrograms (mcg) of the MK-7 form of vitamin K2 per day as well as 5 mcg of vitamin D3 per day for one year. However, researchers aren't sure ...