Depending on your product, unmixed (dry) methylcobalamin vials should be stored following product instructions
Biochemical Pharmacology (2018) 2
Instead, it inhibits an enzyme called NNMT, which shifts cell metabolism toward fat oxidation and muscle preservation
[19] Other than that, though, B12 injections are considered to be quite safe, so try not to worry about doing it "wrong." As long as you wash your hands, work in a sterile environment, and inject into the proper site using the correct technique, you'll do great.Thanks Tips Store vitamin B12 injection medication at room temperature, away from moisture, heat, and light
Not everyone needs a test first, but it can be helpful, especially if you have chronic fatigue, numbness, or dietary restrictions