Subcutaneous administration of vitamin B12 is sometimes employed, especially in patients with congenital cobalamin metabolism disorders who require high doses to maintain normal metabolic pathways
When administered via nasal spray, cyanocobalamin is absorbed through the nasal mucosa, directly entering the bloodstream
Always use a new, sterile syringe for each injection
Maintain sterility, use it for a single patient, and discard it according to protocol, since the preparation and administration of injectable medications are clinical responsibilities for qualified healthcare professionals
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However, prolonged high doses of vitamin B12 can lead to various side effects: Anaphylactic shock: This allergic reaction to vitamin B12 is rare but very dangerous, potentially leading to death