Vitamin B3 (Niacin) RDI
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Vitamin B3 (niacin) has a recommended daily intake which is different for the various age groups and genders.
Find your recommended daily intake of vitamin B3 (niacin) below:
- Infants (0-6 months) - 2mg
- Infants (7-12 months) - 4mg
- Children (1-3 years) - 6mg
- Children (4-8 years) - 8mg
- Children (9-13 years) - 12mg
- Boys (14-18 years) - 16mg
- Girls (14-18 years) - 14mg
- Men (19 years & older) - 16mg
- Women (19 years & older) - 14mg
- Pregnant women (all ages) - 18mg
- Lactating women (all ages) - 17mg
There is an established recommended daily intake and tolerable upper limit for vitamin B3 (niacin)
Tolerable Upper Limit
There is also a tolerable upper limit for vitamin B3 (niacin) - this is the maximum that can be safely taken of this vitamin before it produces serious and toxic side effects:
- Infants (0- 12 months) - not established*
- Children (1-3 years) - 10mg
- Children (4-8 years) - 15mg
- Children (9-13 years) - 20mg
- Children (14-18 years) - 30mg
- Adults (19 years and over) - 35mg
- Pregnant & lactating women (<18 years) - 30mg
- Pregnant & lactating women (18-50 years) - 35mg
* The tolerable upper limit for vitamin B3 (niacin) for infants aged 0-12 months has not yet been determined due to a lack of data about the adverse effects in this age group and a concern about the lack of ability of the body of infants to handle excess amounts. The only source of vitamin B3 (niacin) intake should be from food (breast milk and/or baby formula) to prevent high levels of intake and possible adverse effects.