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Vitamin B12 injections deliver methylcobalamin or cyanocobalamin directly into muscle tissue, bypassing the digestive tract

Always start with a sterile environment, clean hands, and a disinfected injection site to minimize risks and side effects

Certain medications, including some medications used to treat gastrointestinal disorders, may make it more difficult for some people to absorb B12 from food sources

Wang, H., Li, L., Qin, L

Thus, this survey design of real-world use complements the previous randomized controlled studies [21,22,23]

Dietary sources should be prioritized, with supplements added only to reach age-appropriate total intake (1,000-1,200 mg daily from all sources)