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"Prevalence of vitamin B12 deficiency in type 2 diabetic patients using metformin: a cross-sectional study"
While side effects are rare, some individuals may experience mild discomfort at the injection site or temporary symptoms such as dizziness or nausea
age-related plasma decline (roughly 200 ng/mL at age 20 to about 80 ng/mL by 60): Pickart L, Margolina A
B-vitamins help your body turn food into real, usable energy, which is why a B12 shot is such a popular pick for a midday slump, an early shift, or a pre-gym lift
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