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Many men with digestive issues, low stomach acid, or genetic absorption problems may see less benefit from pills
Not having enough can cause tiredness, brain issues, and big red blood cells
Methylcobalamin should not be used in patients with early hereditary optic nerve atrophy (Lebers disease)
The study used databases at the Toronto-based Institute for Clinical Evaluative Sciences to review the patient records of 146,850 residents of the province aged 65 or over who were prescribed regular vitamin B12 shot between January 2011 and October 2015
Sterility: injecting yourself at home without training carries a risk of infection or nerve injury
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