After being extracted by gastric acid, it travels to the terminal ileum, where it is co-absorbed along with the intrinsic factor, an enzyme from the stomachs parietal cells (Fig
But not for the reason most people think
Intramuscular B12 Injection Locations The Upper Buttocks If someone is giving a B12 shot in the upper buttocks region, the injection is best done in the outer and upper region of the muscle
How often do you need B12 shots
Vitamin B12 is an essential nutrient that plays a vital role in many bodily functions, including red blood cell formation, nerve function, and DNA synthesis
These include the deficiencys severity, underlying medical conditions, and how well the patient responds to treatment