6 b12 injections in 2 weeks The Truth About Injections: Benefits, Cost & How They Work B12 Shots at Home: How,
Description
Report the incident Inform the healthcare provider who administered the injection to make sure it is documented

Individual absorption : Factors like age and digestive health can affect B12 absorption
Most patients experience no side effects

International journal of molecular sciences, 19(7), 1987.

If your B12 levels are already normal, extra supplementation may not significantly improve fatigue because the body usually eliminates excess B12