Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is ...
For every 100 IU of vitamin D ingested the blood level of 25-hydroxyvitamin D, the measure vitamin D status, increases by 1 ng/ml. It is estimated that children need at least 400-1000 IU of ...
there’s no consensus on how much vitamin D is necessary to maintain them. Some people suggest that taking 1,000 IU per day is sufficient, but others note that people with severe deficiency ...
It’s important to check how much vitamin D the tablets contain as they vary and it’s advised not to take more than 25 micrograms (µg) or 1000 IU (International Units) of vitamin D a day.