vitamin b12 injections how to give Best Injection Site: Administering B12 Shots Safe B12 Injection Guide at

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Of the four types of influenza, only type A has caused human pandemics and can be zoonotic, while type B causes seasonal outbreaks and only circulates in humans

Patients rotate injection sites daily to avoid localized tissue irritation

The AAFPs evidence-based clinical review states directly: Oral administration of high-dose vitamin B12 (1 to 2 mg daily) is as effective as intramuscular administration for correcting anemia and neurologic symptoms in patients with B12 deficiency (Langan RC, Goodbred AJ, American Family Physician, 2017)

This finding is consistent with the Australian study described above (24) that found cognitive performance was impaired in participants who had high RBC folate and serum vitamin B-12 within the low-normal range

J Comp Neurol 522:11911208