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That role is real and well described in biochemistry
A Vitamin B12 injection delivers the vitamin directly into the bloodstream through muscle tissue, allowing faster absorption than tablets or oral supplements
The speed of improvement after a B12 injection can vary from person to person
Moreover, some patients may interrupt their treatment once symptoms improve, not realising the long-term necessity of ongoing supplementation to prevent recurrence of deficiency symptoms
Otherwise, product seems to be working well
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