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 ...
June 3, 2024 — Healthy adults under the age of 75 are unlikely to benefit from taking more than the daily intake of vitamin D recommended by the Institutes of Medicine (IOM) and do not require ...
the measure vitamin D status, increases by 1 ng/ml. It is estimated that children need at least 400-1000 IU of vitamin D a day while teenagers and adults need at least 2000 IU of vitamin D a day ...