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Injections are very effective at raising blood levels of vitamin B12 and preventing or reversing a B12 deficiency

For most patients, the best choice is less about which molecule is theoretically superior and more about which one is accessible, affordable and tolerated answers that depend on individual circumstances a provider can help work through

The consultation helps the prescriber check eligibility, medical history, current medicines and possible safety concerns

To compensate, use vendors whose CoAs include quantitative assay results (milligrams per vial, not just purity percentage), or apply a conservative overage assumption in your dosing calculations when using vendors without quantity verification data