why give b12 injections What Are the Benefits of Vitamin Injections? What are the benefits of

Vitamin Shots are intramuscular (IM) injections that deliver small, highly concentrated amounts of vitamins into the muscle bypassing the digestive tract allowing for optimal absorption of nutrients

doi: 10.1186/s13023-021-01847-9

The aim is to get B12 into the body without going through the digestive system

Subcutaneous may offer slightly more consistent plasma levels, but the practical difference is marginal given the compounds short half-life requiring daily dosing either way

In one study, 24-month-old mice treated with an NNMT inhibitor showed enhanced muscle stem cell activation following injury, compared to controls

if you were to get an allergic reaction, it would likely be soon after injection