Data on skin synthesis of vitamin D indicate oral intake of 10,000 IU/day is safe. The half-life of 25 (OH)D3 is about 3 weeks. That is, it takes about 3 weeks for the body to metabolize one-half of a dose of vitamin D.
How many IU are in a UG of vitamin D?
Vitamin D ug to IU Calculator. Vitamin D (ug) Vitamin D (IU) #N#Formula: 1 ug = 40 IU.
Is 10000 IU of vitamin D3 a day too much?
10,000 iu of Vitamin D3 per day. Is this dosage harmful? Recent blood report at Berkley Heart Lab showed my Vitamin D-25 OH (ng/ml) to be 18 (should be between 30-100). My doctor has put me on Vitamin D3. I take 10,000 iu/day for 30 days then 5,000 thereafter. Recent reports say this dosage can be harmful.
How much vitamin D do you really need?
Experts Recommend Vitamin D 10,000 IU Upper Limit. Currently, the tolerable upper intake level (UL) in Europe and the US is set at 2000 International Units (IU), equivalent to 50 micrograms per day. However, recent research, particularly from clinical trials, suggests that this should be raised.
What is hypervitaminosis D?
It’s also termed hypervitaminosis D. Vitamin D is a fat-soluble vitamin. In contrast to water-soluble vitamins, the body has no easy way of getting rid of fat-soluble vitamins. For this reason, excessive amounts may build up inside the body.