Certain people are at greater risk for deficiency because of things like diet, lifestyle, and prescription medications
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Report any signs of allergic reaction, since serious reactions have been reported with injected vitamin B12
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Why it matters for body composition: Smaller fat cells mean less inflammation and better insulin sensitivity, two key components for losing fat while preserving muscle
If you're taking hydroxocobalamin, keep the following things in mind: Although this injection takes effect right away, it may take some days or even a few weeks for you to get back to health