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The presence of comorbidities can significantly impact the pharmacokinetics of Vitamin B12, making it essential to adjust dosing protocols. Expert Opinion on Vitamin B12 Therapy Genetic Factors Affecting B12 Metabolism Genetics play a role in how well someone can use Vitamin B12
They can be injected into the muscle, usually in the arm or buttock
Monthly 1,000 mcg Maintenance Protocol Once the deficiency is fixed, a monthly maintenance protocol of 1,000 mcg injections is suggested
Hold the skin tight at the injection site and insert the needle at a 90-degree angle
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