[Back to Vitamins & Minerals][Thiamine-B1][Riboflavin-B2][Vitamin B6][Vitamin B12] [Biotin][Folate][Pantothenic Acid] [Vitamin C]

Major dietary sources of niacin include meat, poultry, fish, organ meats, milk, eggs, whole grain and enriched breads and cereals.

Major Body Functions:

>Aids in energy metabolism
>Maintains normal functioning of the nervous and digestive tract
>May lower blood cholesterol

Deficiency Symptoms:

>Pellegra, characterized by dermatitis (inflammation of the skin), diarrhea and dementia
>Irritability
>Loss of appetite
>Weakness and dizziness

Excessive Intake and Toxicity Symptoms:

>Vascular dilation, resulting in flushing
>Liver damage
>Ulcers
>Ras