overdose b12 injection Treatment with high dose vitamin been shown to be safe Symptoms of B12 Overdose: Causes
Description
Most individuals who follow a balanced diet get enough B12, but doctors may prescribe the shots for those who cannot absorb it.

Strand TA, Taneja S, Kumar T, et al

One crucial function it provides is the production of red blood cells, which carry oxygen throughout the body for various functions
Lack of response may indicate incorrect diagnosis, concurrent deficiencies, or inadequate treatment frequency

Results may vary depending on individual metabolism, baseline nutrient levels, and overall health

There would be far less debate now