Poultry, meat, fish, and dairy products are food sources of vitamin B-12
For most patients with vitamin B12 deficiency, high-dose oral supplements are as effective as intramuscular injections at raising serum B12 levels and resolving symptoms
Although the two products may appear nearly identical, bacteriostatic water and sterile water serve slightly different purposes in laboratory environments
Because vitamin pills can be difficult to digest and often contain a multitude of ineffective substances, injections are a much-preferred, direct method
Even some meat eaters dont absorb it very well (4, Unlike other vitamins, the absorption of vitamin B12 depends on a protein produced in your stomach, called intrinsic factor
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