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why do people take b12 injections The Advantages of Versus Oral Supplements: Shawn Veiseh, M.D.: Family Medicine Why B12 Shots Are Popular
Description
[136] The total world production of vitamin B 12 in 2008 was 35,000 kg (77,000 lb)

As some deficiencies (particularly vitamin B 12 ) may take years to present clinical symptoms, the long-term management of vitamin B deficiency is crucial

Blood (2017) 130:121

The time to maximum concentration (Tmax) following intramuscular administration is approximately 1 hour
