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Digestive Enzymes, Probiotics, Vitamins, Minerals, Phytonutrients, Fatty Acids
Complementary Alternative Medicine (CAM).
Water Soluble Vitamins
 
















Fat Soluble Vitamins  
Vitamins
Niacin (Nicotinic acid, Vitamin B3)  

General description
There are two basic forms of vitamin B-3, nicotinic acid (niacin) and
niacinamide. The body obtains niacin in two ways: it makes it from the amino
acid tryptophan, and it gets pure nicotinic acid from foods. Nicotinic acid was
discovered as a result of pellagra epidemics in the southern United States at
the turn of the 20th century. The heavily corn-based diet of the South, at the
time, prevented an adequate dietary ingestion of the vitamin. Since 1939, white
flour has been enriched with nicotinic acid as a preventive measure.

Food sources
Some good sources of vitamin B-3 are green vegetables, meat, poultry, fish,
whole-grain, enriched bread and cereal. Egg and milk don't have much B-3, but
they contain tryptophan, an amino acid which the body can convert into
nicotinic acid.

Health applications

Growth
Healthy tissues
Lipid metabolism
Eye health
Cardiovascular health
Functions and uses
Niacin is essential for growth, for healthy tissues, and for the conversion of
carbohydrates into energy. It helps produce fats in the body and it assists in
processing alcohol. Vitamin B-3 acts as a coenzyme in many cellular
reactions, is involved in generating energy for normal cellular function, and
may be involved in the processes by which skin pigments are made. Without
niacin, thiamin (B-1) and riboflavin (B-2) cannot function properly.

Dosage/toxicity
Normal dietary habits usually allow for an adequate intake of this vitamin. Also,
B-3 is often an ingredient in B-complex, or multi-vitamin formulas. Niacin taken
in excess of 50 mg daily may cause flushing, stomachache, or headache. If
taken in large amounts, niacin can cause liver and eye damage, diabetes,
gastritis and gout; therefore, it is important that high intakes of niacin, as used
for therapeutic purposes, be closely monitored by a doctor or nutritionist.