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It may sound high, but in reality, only a small percentage is absorbed

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Vitamin B12 injections are particularly beneficial for: Individuals with a B12 deficiency: This is common in vegetarians, vegans, older adults, and those with certain medical conditions affecting absorption

Results are not guaranteed, individual responses vary, and it is not suitable for everyone including during pregnancy or breastfeeding

By highlighting the limitations and potential focus areas of current research, our study provides guidance for researchers to deepen their investigations and encourages them to explore innovative avenues in their work