Recommended daily allowances (RDAs) are defined as the levels of intake of essential nutrients that the Food and Nutrition Board at the Institute of Medicine has found to be adequate to meet the known nutrient needs of most healthy persons.

The Food and Nutrition Board at the Institute of Medicine recommends the following dietary intake for niacin:

Infants

• 0 - 6 months: 2 milligrams per day (mg/day)
• 7 - 12 months: 4 mg/day

Children

• 1 - 3 years: 6 mg/day
• 4 - 8 years: 8 mg/day
• 9 - 13 years: 12 mg/day

Adolescents and Adults

• Males age 14 and older: 16 mg/day
• Females age 14 and older: 14 mg/day

Specific recommendations depend on age, gender, and other factors (such as pregnancy). Women who are pregnant or producing breast milk (lactating) need higher amounts. Ask your health care provider which amount is best for you.

The best way to get the daily requirement of essential vitamins is to eat a balanced diet that contains a variety of foods from the food guide pyramid.