Vitamin B12 dosage The average recommended daily amounts, measured in micrograms, vary by age: Infants up to age 6 months: 0.4 micrograms Babies aged 7-12 months: 0.5 micrograms Children aged 1-3 years: 0.9 micrograms Kids aged 4-8 years: 1.2 micrograms Children aged 9-13 years: 1.8 micrograms Teens aged 14-18 years: 2.4 micrograms Adults (19+ years): 2.4 micrograms Pregnant: 2.6 micrograms Breastfeeding: 2.8 micrograms Vitamin B12 foods You can get vitamin B12 from animal products, which have it naturally, or from foods that have been fortified with it
The first-line test is serum vitamin B12 measurement , with levels below 148 pmol/L generally considered deficient, though the exact threshold varies between laboratories
Continue Reading How to give a B12 injection to yourself from the comfort of your home
For in-vitro laboratory research only
A: Many people notice improved energy within 24-48 hours of their first injection, though individual responses vary
May be injected intravenously at the discretion of theveterinarian