Rich sources of both niacin and its originator, tryptophan, are meats, poultry, fish, liver, kidney, eggs, nuts, peanut butter, brewer's yeast, and wheat germ.
Although Niacin can be manufactured in the body from the essential amino acid tryptophan, the vitamin is not stored in the body, and any excess in the diet is released.
Other niacin sources are through supplementation.
Supplements provide a standard way to obtain the needed amount of niacin in each dose to meet the body’s needs.
Symmetry Supplements with Niacin (Vitamin B-3) below: