Is 1000mg of vitamin D daily too much?
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4 min read
According to the National Institutes of Health (NIH), the Tolerable Upper Intake Level (UL) for vitamin D in adults is 4,000 IU (100 mcg) per day. This article clarifies the crucial difference between milligrams (mg) and International Units (IU) and why a very high intake of vitamin D, such as 1000mg, can be dangerous.
