Vitamin A (Retinol) plays many important roles in our health. Amazingly, most of it is not supplied by pure, preformed Vitamin A but from carotenoids instead.
Pure vitamin A is usually only available on prescription as it is toxic in regular, and not excessive, amounts. The only sources of preformed vitamin A are "animal": for example, fish oils, especially cod liver oil, whole milk and liver. Many fortified foods, such as breakfast cereals, c...
2.1.1 Vitamin A Vitamin A belongs to the retinoid family that comes in the form of preformed vitamin A (retinol, retinaldehyde, and retinoic acid) or provitamin A (carotenoids). The International Union of Pure and Applied Chemistry (IUPAC) recommended in 1982 that all derivatives with the char...
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These include solutions of pure synthetic retinol and concentrates that contain both retinol and vitamin D in various proportions. Vitamin A capsules contain 3 to 15 mg of retinol (10,000 to 50,000 USP vitamin A units) per capsule: tablets are also available. A water-miscible preparation (15...
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Pure By Nature One-Daily Multivitamin for Men, Our Centrum Men multivitamin is purely an organic multivitamin that includes a vegetable blend with organic fruits such as carrot, blueberry, kale, raspberry, spinach, and pomegranate to give you the primal multivitamin essentials. Supports metabolism...
Vitamin C is highly effective in its pure form, according to Wnek, but it is a tricky ingredient to formulate with because it is very unstable and can degrade with exposure to oxygen, light, water and high pH. That means that while it is a hero ingredient, its properties are difficult ...