For most women, the recommended daily dose for niacin is 14 milligrams, while men's is 16 milligrams, according to WebMD. Women should get 17 milligrams when breastfeeding and 18 when pregnant.Continue Reading
The maximum amount of niacin most adults should consume in one day is 35 milligrams, WebMD states. However, sometimes higher doses are prescribed to help control elevated cholesterol levels.
Two milligrams of niacin are adequate for infants 6 months and younger, reports the University of Maryland Medical Center. From that point up to 1 year, 4 milligrams are sufficient. Children ages 1 to 3 need 6 milligrams, while those between the ages of 4 and 8 need two more. From ages 9 to 13, children require 12 milligrams. Between the ages of 14 and 18, girls should get 14 milligrams, and boys should take in 16.Learn more about Vitamins & Supplements