are b12 tablets better than injections Vitamin Injection Dosage B12 Injections vs Pills: Richmond's

As people age, their ability to absorb B12 from food declines due to atrophic gastritis, which reduces stomach acid production

So far, most of the evidence comes from lab and tissue-sample studies rather than large human trials

IV doses of 25-400 mcg/kg for safety studies Important: These are experimental doses used in animal studies and cannot be extrapolated to other species due to significant differences in metabolism, pharmacokinetics, receptor expression, peptide degradation rates, and tissue distribution patterns

Vitamin B12 deficiency is a common problem that everyone encounters

What Does Vitamin B12 Actually Do in Your Body

With the eight-zone rotation system described in this guide (four zones per thigh, alternating legs), each spot gets 7 weeks of rest between injections