Individual demand amounts of vitamin B6, niacin

Stages of growth	Requirement of niacin (mg)
For children under one year	0.4
Children 1-3 years	0.6
Children 4-6 years	0.9
Children 7-9 years	1.2
Males 10-12 years	1.6
For adolescents and adults, males and females	2.0
For pregnant women	2.5
For lactating	2.5