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People with fatigue, plant-based diets, digestive disorders, or busy lifestyles often benefit greatly from B-12 shots

Although anemia is often a symptom, the condition is actually the end stage of an autoimmune inflammation of the stomach known as autoimmune atrophic gastritis, resulting in destruction of stomach cells by one's own antibodies (autoantibodies)

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Common side effects may include pain or redness at the injection site, mild diarrhea, or headaches [3]

The MHRA has issued warnings about unlicensed injectable products, particularly those obtained online or administered in non-clinical settings, due to concerns about contamination, incorrect dosing, and lack of quality assurance