Daily How Much

One standard 6-ounce tub of plain yogurt supplies around 0.5–0.7 micrograms of vitamin B12, while many Greek yogurts reach about 1 microgram per cup.

One large egg contains about 0.6 micrograms of vitamin B12, giving roughly one quarter of an adult’s daily requirement.

Most adults need about 2.4 micrograms of vitamin B12 per day, with higher targets in pregnancy, breastfeeding, and some medical conditions.

A daily intake of 2.4 micrograms of vitamin B12 equals 2,400 nanograms and matches the standard adult recommendation.

Typical vitamin B12 injection doses range from 1,000 micrograms daily for 1 week to 1,000 micrograms monthly for maintenance, set by your doctor.

Most vitamin B12 injections contain 1,000 micrograms per mL, and a standard shot is 1 mL for a total of 1,000 micrograms.

Most adults use 250–500 mcg of vitamin B12 daily for weight loss goals, but it mainly corrects low levels rather than driving fat loss on its own.

For daily energy, most adults need about 2.4 mcg of vitamin B12, while higher short-term doses are usually reserved for medically supervised plans.

Most vegan adults need about 2.4 micrograms of vitamin B12 per day, usually met through fortified foods and a small supplement.

Most 2-oz 5-hour Energy shots contain 500 mcg of vitamin B12, roughly 20,000% of the daily value for a healthy adult.