how often should you inject b12 Have Injections? Vitamin B12: How Frequently Should

Your GP may need to check for co-existing deficiencies (folate, iron, vitamin D) or investigate alternative causes for your symptoms

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Its also worth noting that rotating between multiple SQ sites is more comfortable than rotating IM sites

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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