what's a b12 injection for Shots: Benefits, Uses, Safety, Cost & How They Work The Benefits of B12 Injections:

Choosing folinic acid over Vitamin B12 depends on: The type of chemotherapy The patients nutritional status Genetic factors affecting nutrient use In some cases, folinic acid helps protect cells from methotrexates harm

The NHS treatment page lays it out clearly: Loading phase (no neurological symptoms): 1mg every other day for two weeks, or until symptoms stop improving

This is another scenario where B12 injections provide a more direct and reliable method for restoring your levels

Vitamin B12 shots are administered most often in those with genetic conditions that block absorption and people with the disorder called pernicious anemia, which can result in severe malabsorption and deficiency