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However, intramuscular shots release B12 gradually from muscle tissue, while IV infusions deliver the full dose into the bloodstream immediately
A vitamin B12 shortage can cause a variety of health issues, ranging from exhaustion to permanent neurological abnormalities
One study found that lactating women taking 2-60 mg of niacin daily had milk niacin concentrations of 1.17-2.75 g/mL
The effects may last longer for some, while others may require more frequent injections to maintain consistent energy levels
They are not risk-free, but with attention they are practical and effective when needed
Because so little is absorbed, they are taken daily
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