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%).
There are eight water-soluble vitamins known as B-complex vitamins: thiamin (vitamin B1), riboflavin (vitamin B2), vitamin B6, vitamin B12, folate, biotin, niacin and pantothenic acid. Vitamin B-complex vitamins are needed for healthy skin, good vision, a healthy nervous system and the formation of red blood cells.ater soluble vitamins, which are highly soluble, require daily replenishment in your body. Fat soluble vitamins, which are also essential for your health and stored in your liver, do not need to be replaced every day. The Importance of Fat Soluble Vitamin A.