Vitamins are a type of essential nutrients for maintaining human health. Essentially, they are low molecular organic compounds that cannot be synthesized in the body, or the amount synthesized is insufficient to meet the body's needs, so they must be supplied by food.
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Vitamin B, also known as vitamin B, is a general term for certain vitamins that often come from the same food source, such as yeast.
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Vitamin A, also known as retinol (its aldehyde derivative retinol), is an unsaturated monobasic alcohol with an ester ring, including two types: vitamin A 1 and A2. Vitamin A1 and A2 have similar structures.
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Vitamins are organic compounds required for human nutrition and growth. If the body lacks vitamins, it will develop certain diseases. Therefore, some people believe that vitamins are nutrients, and intake is beneficial.
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