vitamin b12 amount per day
The Dietary Reference Intake (DRI) of vitamin B12 varies depending on your age and your particular needs. In males and females ages 14 and over, the DRI is 2.4 micrograms (mcg) per day. That number goes up to 2.6 mcg during pregnancy and 2.8 mcg during breast-feeding.Supplementation of higher levels of vitamin B12 may be recommended for certain people over age 50 who have trouble absorbing the vitamin from foods.n males and females ages 14 and over, the DRI is 2.4 micrograms (mcg) per day. That number goes up to 2.6 mcg during pregnancy and 2.8 mcg during breast-feeding. Supplementation of higher levels of vitamin B12 may be recommended for certain people over age 50 who have trouble absorbing the vitamin from foods.