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Intramuscular injections of B12 are administered during the first stage of the test, an hour after the patient takes an oral dose of radiolabeled vitamin B12
1997 Nov-Dec Cristiana Paul, David M Brady
Feeling the effects: Youll usually start to feel the energizing effects of a B12 shot within a short time, often within minutes or an hour
Convenient ampoule format for precise dosing
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