1. Health

Niacin / Vitamin B3 Fact Sheet

From , former About.com Guide

Updated December 30, 2009

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Functions:

  • energy metabolism
  • healthy skin, digestive system and nervous system

Sources:

  • meat
  • milk
  • eggs
  • poultry
  • fish
  • whole grains
  • enriched bread and cereal
  • nuts

Deficiency (Not enough):

  • weakness
  • dizziness
  • loss of appetite
  • confusion
  • diarrhea
  • rash

Toxicity (Too much):

  • swollen tongue
  • rash
  • low blood pressure
  • nausea / vomiting / diarrhea

Daily Allowances:

  • 100mg

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