Medical and Editorial Standards Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims
The patient lacks intrinsic factor, a protein mandatory for the intestinal uptake of a physiological dose of B12
Melanotan-II is not an FDA-approved drug and is supplied for research use only
Dietary Habits: Vegetarians, vegans, and individuals with restrictive diets may need regular B12 injections to maintain optimal levels
Most protocols use 0.3 mg per day injected into abdominal fat