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Vitamin B12

What is the daily requirement for Vitamin B12? The Recommended Dietary Allowance (RDA) for Vitamin B12 varies by age and gender, but generally, adult men require 2.4 mcg and adult women require 2.4 mcg daily.

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Why do you need Vitamin B12? Getting enough Vitamin B12 is essential because it naturally vital for nerve tissue health and brain function..

Vitamin B12 at a Glance

  • Primary Role: Vital for nerve tissue health and brain function.
  • Classification: Vitamin
  • Measurement Unit: mcg
  • Also Known As: cobalamin

Type: Vitamin

Males

Age Group RDA
9–13 years 1.8 mcg
14–18 years 2.4 mcg
19–30 years 2.4 mcg
31–50 years 2.4 mcg
50+ years 2.4 mcg

Females

Age Group RDA
9–13 years 1.8 mcg
14–18 years 2.4 mcg
19–30 years 2.4 mcg
31–50 years 2.4 mcg
50+ years 2.4 mcg
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