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Immediate medical attention is required for severe allergic reactions

3 If you are concerned that you may be deficient in vitamin B12, speak with a healthcare provider for a proper diagnosis and treatment

If oral supplements have not improved your symptoms, injection is almost certainly more appropriate for you

While B12 can be obtained through diet, many people are deficient due to factors like poor diet, digestive issues, or lifestyle factors like age or vegetarian/vegan diets

B12 plays a critical role in red blood cell formation and energy metabolism, ensuring that oxygen is efficiently delivered to tissues throughout the body

If you've administered more than the prescribed dose, inform your doctor promptly