Niacin (nicotinic acid or vitamin B3) is a water soluble vitamin and is used by your body to turn food into energy. Niacin also helps keep your nervous system, digestive system, skin, hair and eyes healthy.
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Vitamin B2 is also referred to as riboflavin. It is a water-soluble vitamin that is flushed out of the body daily, so it must be restored each day.
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