are vitamin b12 injections better than tablets Oral vs. B12 Injections: What Is the Difference? The Advantages of B12 Injections

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More serious vitamin B12 side effects may include the following: Allergic reactions, such as hives, trouble breathing, or swelling of the face, lips, tongue or throat

If you struggle to consume enough vitamin B-12 through diet, vitamin B-12 shots get easily absorbed into your bloodstream and are a great way to bump up the intake and minimize the risks associated with the deficiency.

While oral bioavailability is lower than subcutaneous administration, these studies established that even high oral doses maintained excellent safety profiles, though higher doses (54 mg) were associated with increased gastrointestinal discomfort