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AgeRDA (mg)
WomenMen
1-3 years0.5 mg0.5 mg
4-8 years0.6 mg0.6 mg
9-13 years1.0 mg1.0 mg
14-18 years1.2 mg1.3 mg
19-50 years1.3 mg1.3 mg
51 and older1.5 mg1.7 mg
Pregnancy1.9 mgn/a
Lactation2.0 mgn/a