A: When taken as directed under professional guidance, side effects are rare
The only way to really know if you've taken too much vitamin B12 Apparently, there are, in fact, some things that can go wrong if you take too much vitamin B12, from a minor headache to a severe allergic reaction, depending on your own personal risk profile
Suggested Use: Take one capsule twice daily
Seek medical attention immediately, infections require antibiotic treatment
Institute of Medicines Recommendations In their 1998 report, the IOM used the amount of B12 required to treat pernicious anemia as a basis for their recommendations for the general adult population (IOM, 1998)
What is Tiaminal B12 injection, and how is it used