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%).
Although you get vitamins and minerals from the foods you eat every day, some foods have more vitamins and minerals than others. Vitamins fall into two categories: fat soluble and water soluble. The fat-soluble vitamins â A, D, E, and K â dissolve in fat and can be stored in your body. The water-soluble vitamins â C and the B-complex vitamins (such as vitamins B6, B12, niacin, riboflavin, and folate) â need to dissolve in water before your body can absorb them. Because of this, your body can't store these vitamins.