For example, while the injection covers B, B, B, B, B, you still need other vitamins (like vitamin C, B folate, B if not supplemented separately, etc.) and minerals (iron, zinc, etc.) from food
Physicians should ensure claims note whether the medication was used to treat or alleviate symptoms of deficiency, especially in patients with low serum vitamin B12 or conditions linked to vegan diets or malabsorption syndromes
Mind the "slow down" rule hurrying any step is where most first-time errors sneak in
Due to the complicating factor of a shot and the extra cost, it seems the best route for most people is to focus on getting adequate B vitamins from food, and supplement as necessary.