Route | Advantages | Disadvantages |
Oral |
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Intramuscular |
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Vitamin B12 to prevent or treat deficiency can be given orally (tablets, sublingual) or intramuscularly. The oral dose used to overcome impaired absorption is 1000 to 2000 mcg daily. The initial IM dose (can also be given as a deep subcutaneous injection) for adults is 1000 mcg daily, every other day, or weekly, depending on the severity of deficiency and clinical concern, followed by once monthly (cyanocobalamin) or once every two to three months (hydroxocobalamin). All patients should have an evaluation for the underlying cause.
Other routes are generally not used:IM: intramuscular.
* Some individuals have a strong placebo effect from the intramuscular injection and feel an immediate burst of energy; they may prefer to continue intramuscular injections.
¶ The requirement for outpatient visits and higher cost can be avoided by self-administration of B12 injections, which may be possible for some patients with appropriate training.آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟