Vitamin B3 Requirement


Signs, symptoms & indicators of Vitamin B3 Requirement

Supplements and Medications  

Niacin supplementation

Conditions that suggest Vitamin B3 Requirement



Pellagra is caused by a lack of Vitamin B3 (niacin) in the diet or poor absorption of the vitamin. It is common throughout the world but infrequent in the U.S. It primarily strikes those lacking protein in their diets or who have a high corn diet or are unable to assimilate the vitamin. Symptoms often begin with weakness, listlessness, insomnia, and weight loss. Exposed skin becomes red and scaly. Loss of appetite, indigestion, and diarrhea occur. As the disease progresses the nervous system is impacted, manifesting symptoms such as headaches, dizziness, aches, muscle tremors and mental disturbances.

Tumors, Malignant  

Carcinoid Cancer

Niacin frequently becomes deficient when these tumors are present because of its increased metabolism to form tryptophan.

Risk factors for Vitamin B3 Requirement

Supplements and Medications  

Multiple vitamin supplement use

Recommendations for Vitamin B3 Requirement



Weak or unproven link
Proven definite or direct link
Strongly counter-indicative
Very strongly or absolutely counter-indicative
Likely to help



A disease caused by a deficiency of thiamine (B1), usually occurring in alcoholics or in persons with malabsorption disorders.


(Vitamin B-3): A coenzyme B-complex vitamin that assists in the breakdown of carbohydrates, fats and proteins. Essential for the health of the skin, nerves, tongue and digestive system. It is found in every cell of the body and is necessary for energy production. Niacin is also needed for DNA formation.


Compounds composed of hydrogen, oxygen, and nitrogen present in the body and in foods that form complex combinations of amino acids. Protein is essential for life and is used for growth and repair. Foods that supply the body with protein include animal products, grains, legumes, and vegetables. Proteins from animal sources contain the essential amino acids. Proteins are changed to amino acids in the body.


Excessive discharge of contents of bowel.

Nervous System

A system in the body that is comprised of the brain, spinal cord, nerves, ganglia and parts of the receptor organs that receive and interpret stimuli and transmit impulses to effector organs.


The chemical processes of living cells in which energy is produced in order to replace and repair tissues and maintain a healthy body. Responsible for the production of energy, biosynthesis of important substances, and degradation of various compounds.


Essential amino acid. Natural relaxant and sleep aid due to its precursor role in serotonin (a neurotransmitter) synthesis. Along with tyrosine, it is used in the treatment of addictions.

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