While anyone could benefit from a shot of B12, weve found that the best candidates are people who have a B12 deficiency, are struggling to get all the vitamins through a vegan or vegetarian diet, someone who is older, or someone who has digestive or autoimmune issues
Improved Levels of Energy and Concentration If you notice that youre still exhausted no matter how much you slept the night prior, a vitamin B-12 injection may be needed
These can include redness or soreness at the injection site, which usually resolves within a few hours to days
Cystatin C: A More Accurate Option Cystatin C is a blood test that can detect kidney function changes earlier than creatinine, which is especially helpful if youre on high-dose B12 therapy
Serum ferritin the level measured in a blood test is the single best marker of how full those reserves are
It is not a peptide, and it is not a GLP-1 drug