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But again, if you're a vegan or follow a strict vegetarian diet, it can be hard to get enough B12 in your diet

Diet assessment and advice are essential as dietary deficiency can usually be easily corrected

Oral bioavailability studies would require dose-escalation trials measuring plasma concentrations after oral dosing versus subcutaneous dosing those trials have not been conducted or published as of 2026.

Refrigerate at 35.6-46.4F (2-8C)

Typically, your doctor should bill Medicare for the cost of the injection, though you can choose to pay out-of-pocket

Shortness of Breath & Dizziness: Feeling breathless or lightheaded, even with little physical activity