b12 injection studies Injections Scottsdale, AZ B12 Injections for Energy: Benefits
Description
On the part of the immune system: respiratory failure, anaphylactic shock, increased sweating, Quincke's edema

And then move to maintain this once every 3-4 weeks

Therefore, these injections should be administered by a healthcare professional who can monitor for adverse reactions and adjust treatment as necessary

it is (mainly anaerobes) or archaebacteria in the presence of cobalt
Lee HC, Deng QW, Zhao YJ

High doses are generally considered safe, though some people may experience minor side effects