Vitamin B3

Vitamin B3 also known as Niacin is a water-soluble vitamin that plays an important role in the body's metabolic processes. It is one of the eight B vitamins and is involved in the conversion of food into energy.

Overview

Vitamin B3 is found in a variety of foods including meat, fish, milk, eggs, green vegetables, cereal grains and yeast. It can also be synthesized in the body from the amino acid tryptophan.

Functions

Vitamin B3 is essential for the metabolism of carbohydrate, fat and protein. It helps to maintain the health of the nervous system, the skin, the hair, the eyes, and the liver. It also aids in the production of stomach acid and the regulation of blood sugar levels.

Deficiency

A deficiency of Vitamin B3 can lead to a condition known as pellagra, which is characterized by dermatitis, diarrhea, dementia, and, in severe cases, death. Other symptoms of deficiency may include fatigue, depression, vomiting, headaches, and poor circulation.

Toxicity

Excessive intake of Vitamin B3 can lead to niacin flush, a condition characterized by burning, tingling sensation in the face and chest, and red or flushed skin. Other symptoms may include liver damage, gastric ulcers, and high blood sugar levels.

See also

• Vitamin B1
• Vitamin B2
• Vitamin B6
• Vitamin B12
• Vitamin B complex

• 
  Chemical structure of Nicotinamide
• FDA Supplement Facts Label
  FDA Supplement Facts Label
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  Symptoms of Pellagra