Vitamin B12 is found almost exclusively in animal products, so if you eat a vegetarian or vegan diet, it can be tough to get enough
Unfortunately, such vitamin B12 injection dosage and frequency advice is common
Side effects are generally mild and may include slight soreness at the injection site or temporary warmth
These shots deliver a concentrated dose of vitamin B12 directly into the bloodstream, bypassing the digestive system for maximum absorption
Journal of Pharmaceutical and Biomedical Analysis (2021) 4
Species differences in receptor biology, metabolic rate, thermogenic capacity, pharmacokinetics, and peptide handling materially affect interpretation