over the counter injectable b12 Nature Made Vitamin Sublingual 1000 mcg Sugar Free Fast Dissolve Tablets, 60 Count Vitamin B12 is not made by the body and is provided either by diet or supplementation Cyanocobalamin B12: Energy & Nerve
Description
So if you have any of the below symptoms, you most likely need B12

In fact, there is no indication to use vitamin B12 shots at all when you are not currently deficient in vitamin B12

Adhere to FDA Guidelines on Compounding The FDA is clear about compounding rules

doi: 10.1001/jama.289.14.1826
