b12 injection without labs clinic policy Cobalamin (vitamin B12) and Folate Deficiency Sublingual B12 vs. B12 Injections:
Description
animal and investigational data only, no approved indication

These include Crohn's disease affecting the terminal ileum, coeliac disease, previous gastric or ileal surgery, and pancreatic insufficiency

It helps a lot of people, but its not without risks

Oral vitamin B(12) and high-dose folic acid in hemodialysis patients with hyper-homocyst(e)inemia

The answer isnt one-size-fits-all it really depends on your unique situation and the specific technology were using
