The goal is a body that produces energy reliably on its own not one that needs an external boost to function
These two types are cyanocobalamin and hydroxocobalamin
Stanley TL et al., "Effects of tesamorelin on non-alcoholic fatty liver disease in HIV: a randomised, double-blind, multicentre trial," The Lancet HIV, 2019
Rotate injection sites (e.g., abdomen, thighs, upper arms) to minimize local irritation
"Biochemical indicators of B vitamin status in the US population after folic acid fortification: results from the National Health and Nutrition Examination Survey 19992000"
Prolonged deficiency allows more extensive damage to accumulate, particularly to the nervous system, which requires longer to repair