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The variable R group gives rise to the four most commonly known cobalamins: cyanocobalamin (CNCbl), methylcobalamin (MeCbl), adenosylcobalamin (AdCbl, also known as cobamamide or 5-deoxyadenosylcobalamin), and hydroxocobalamin (OHCbl)
Aging Cell
When you take B12 as an injection, you need to have a doctors prescription in order to ensure that there are no harmful interactions with other medications
Cyanocobalamin injection: Prescription & dosage information
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