How Much Vitamin B12 Should I Take? | B12 Dosage | Everlywell
www.everlywell.com › blog › vitamins-supplementsTypically, diet can provide sufficient B12 for this age group. [1] Kids and teens (4-18) – Research suggests that this age group should expect to increase their vitamin B12 dosage every 3 to 4 years until age 14. The recommendation for ages 4 to 8 is a 1.2 mcg daily dose. Meanwhile, 1.8 mcg is recommended for ages 9 to 13, and once individuals reach the age of 14, the dosage recommendation jumps to the adult standard of 2.4 mcg a day.