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Description
One of the key advantages of B12 injections is their ability to combat fatigue and enhance energy levels

G.SiegelG

For human relevance, controlled trials with clear endpoints are the critical step

For B12, prolonged use of metformin and acid-suppressing drugs (PPIs, H2 blockers) may reduce absorption of oral B12, which is one reason injectable B12 is considered in select patients

doi: 10.3390/nu15082009
