Administering these vitamins via injection bypasses gastrointestinal absorption barriersuseful for patients with pernicious anemia, post-gastrectomy states, chronic metformin or acid-suppressing therapy that impairs B12 absorption, or conditions that reduce intestinal uptake
Over weeks, that gap compounds
Your optimal dose depends on body weight, baseline hormone levels, metabolic status, and individual receptor sensitivity
This is because it requires conversion to the active form of vitamin B12
Licensed medical providers must oversee treatment, and informed consent is required
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