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Substantial weight loss usually becomes apparent after 8 to 12 weeks of consistent use
Benefits of subcutaneous administration include: Easier for patients to give themselves injections Less risk of muscle irritation Potential for slower absorption, depending on the injection site Intravenous (IV) Usage in Clinical Settings Intravenous Vitamin B12 is usually used for severe deficiency cases or when quick correction is needed
In the UK, injections are usually given as hydroxocobalamin or cyanocobalamin
While B12 injections do work, sublingual vitamin B12 has been shown to be more efficient in boosting B12 levels, especially in patients with deficiency
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