how much b12 should a human take via injection Best Vitamin Site: Administering B12 Shots Are you getting enough B12?

The full dose may be taken once in the morning on an empty stomach, or split into two to three daily doses throughout the day, each on an empty stomach

Vitamin B12 deficiency isn't very common in the US, as people who don't eat enough animal products can still get vitamin B12 from supplements or fortified food sources

Example: A patient signs a consent form prior to receiving a vaccination

Side-by-side comparisons over several months reveal changes that day-to-day observation misses

In the UK, between 10 and 30% of the population are believed to suffer with low levels of vitamin B-12

J Clin Endocrinol Metab 90:59375941