A Review of Vitamin A

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Vitamins are organic compounds that the human body requires to effectively function, thus they have a direct affect on our health and wellbeing. They are derived from the diet in small amounts, and, as such, are often referred to as micronutrients.1 An organic compound is considered a vitamin if a lack of it results in clinical symptoms, known as vitamin deficiency.
- Thiamine (B1) is involved in enzyme functions associated with carbohydrate metabolism.1,2- Riboflavin (B2) is a precursor of coenzymes that are involved in protein metabolism.1,2- Niacin is a coenzyme of dehydrogenases that plays a key role in the metabolism of proteins and carbohydrates.1,2- Vitamin B6, of which the most stable form is pyridoxal, is a coenzyme involved in protein metabolism.1,2- Pantothenic Acid (B5) is the main component of coenzyme-A and a key requirement for cell metabolism, the synthesis of essential…

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