Administered through an injection into a muscle, vitamin B12 shots contain a synthetic version of B12, otherwise known as ...

Side effects from vitamin B12 supplementation are rare, and only occur with B12 injections, not oral supplementation, Allen says. Vitamin B12 injections are typically used to treat a deficiency in ...

Side effects from vitamin B12 supplementation are rare, and only occur with B12 injections, not oral supplementation, Allen says. Vitamin B12 injections are typically used to treat a deficiency in ...

Without a healthy dose of regular vitamin B12, you can become anemic ... There are many factors at play when considering ...