2004, Ed Masson, Barcelona Hvas AM, Juul S, Nexo E, Ellegaard J: Vitamin B-12 treatment has limited effect on health-related quality of life among individuals with elevated plasma methylmalonic acid: a randomized placebo-controlled study
Persistent symptoms after COVID-19 are not associated with differential SARS-CoV-2 antibody or T cell immunity
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Important Considerations and Nuances While the reasons above are the general basis for the refusal, its also important to note: Patient Symptoms: A patient with Pernicious Anemia may feel their symptoms returning before their scheduled injection
No human trial dose exists Every dose number above comes from rodent studies scaled to a human size or from research community use
For short-term use (days to weeks), refrigeration at 4C (39F) is acceptable