and that toxicity should not be expected below 10,000 IU/day. A prominent proponent of increasing vitamin D intake is Dr. Michael Holick, an endocrinologist at Boston University Medical Center.

"There are purified vitamin D3 supplements on the market at 10,000 IU per capsule," Ross says, "so some manufacturers are, knowingly, not playing safe with the public." Again, it is inadvisable to ...

Though most adults need 600 IU of vitamin D daily, taking vitamin D in doses as high as 2,000 IU per day is believed to be safe. Toxicity may occur if you take 10,000 IU of vitamin D or more. Vitamin ...

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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 ...

While getting enough vitamin D to support your health is important, too much can be a problem. Below are the signs and symptoms of taking too much vitamin D, also known as hypervitaminosis D ...

One group of participants took high doses (100,000 IU) of cholecalciferol (vitamin D3) every two weeks for 24 months. In comparison, 74.1% of those who took a placebo experienced those same ...

As such, if you're getting vitamin D from fish sources, try to opt for wild-caught fish instead of farmed-raised fish. The USDA says sockeye salmon has an average of 670 IU of vitamin D per 3.5 ...

In fact, some patients needed more than 10,000 IU per day to reach what the researchers considered a healthy blood level of ...

The upper tolerable limit for adults is 10,000 IU for vitamin A ... which can actually cause calcium to leach out of your bones." Vitamin D is found in some calcium supplements; some orange ...