vitamin b12 replacement side effects injection Feeling Tired All the Time? It Might Be a Deficiency B12 Shots Side Effects And
Description
Some individuals opt for faster absorption with IM shots, while others prefer the slower, controlled absorption that subcutaneous injections provide

The provider explains the clinical case directly

A deficiency in vitamin B12 can lead to weaker bones and a reduced ability to heal from bone fractures

American Journal of Clinical Nutrition, 115(4), 787-789
