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Each injection should contain at least 5,000 mcg of pharmaceutical-grade methylcobalamin to be effective, and most patients notice improvements in energy, sleep, and mood within weeks of starting proper B12 therapy
Assess response at two-week intervals during your first cycle
Because B12 is water-soluble, the NIH Office of Dietary Supplements notes that no tolerable upper intake level has been established excess B12 is excreted by the body rather than accumulating to toxic levels
Understanding these reactions helps distinguish expected responses from those requiring medical attention
Specifically, 1 mL (100-unit) insulin syringes with a 29-31 gauge needle
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