b12 injections vs b12 supplements Oral Supplements: Which are more effective? Discover the vital role of
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Schultz RA, Swoap SJ, McDaniel LD et al (1998) Differential expression of mitochondrial DNA replication factors in mammalian tissues
Use in these populations should only occur under medical supervision with frequent monitoring
However, taking high doses of B vitamins can still be dangerous and cause adverse effects
