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According to the National Institutes of Health (NIH), no Tolerable Upper Intake Level (UL) has been established for B12, indicating that the risk of harm from high doses is low [*]
Typical Dosage Range Most men with low vitamin B12 levels receive around 1,000 mcg per injection, depending on their blood levels and health goals.( 9 ) However higher doses, as much as 2,000 mcg can also be safe in some cases
Also the wrong reason b12 Injections are refused or only prescribed 2-3 monthly If dietary b12 deficiency of course once B12 replete your body can use it
The informed consent was obtained from all participants
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