Waardenburg syndrome. Waardenburg syndrome: Introduction. Waardenburg syndrome: The disease was named for Petrus Johannes Waardenburg, a Dutch ophthalmologist (1886-1979) who was the first to notice that people with two different colored eyes ... more about Waardenburg syndrome.
As a result, most of the fat-soluble vitamins (such as the vitamins A, D, E, and K) that contain amounts above the daily allowance are drug products. The daily dosage of a vitamin supplement for example cannot exceed 300% of the recommended daily allowance, and for vitamin A, this limit is even lower (200%).
Vitamin A is a fat-soluble vitamin that acts as an antioxidant. Antioxidants are chemicals which may help reduce risk of cancer. Since vitamin A is fat-soluble it is not needed in daily, large quantities. Fat-soluble vitamins are stored in the body in organs such as the liver.Most of the vitamin A that we consume goes to the liver to be stored until it is needed by another part of the body.at-soluble vitamins are stored in the body in organs such as the liver. Most of the vitamin A that we consume goes to the liver to be stored until it is needed by another part of the body.