how quickly does a vitamin b12 injection work Shot Work? What to Expect How Fast Do B12 Injections

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While there's no one-size-fits-all answer, many health professionals recommend getting B12 injections every few weeks to maintain optimal levels

If any side effect persists or worsens, contact your prescriber promptly

More research is needed to validate their potential benefits

Albrecht, R

For those with neurological symptoms, hydroxocobalamin 1 mg is given on alternate days until no further improvement is observed, as recommended by NICE guidance and the product information