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Most patients qualify for this simple injection
When deficiency is suspected based on clinical features (fatigue, paraesthesia, cognitive changes) or risk factors (vegan diet, gastric surgery, certain medications), serum B12 measurement guides appropriate intervention
An IV drip includes fluid and takes longer
If you're targeting a specific injury (tendon, muscle, joint), inject as close to it as you can
Animal models have demonstrated cytoprotective effects in inflammatory bowel disease, ulcerative colitis, and gut permeability studies [2]
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