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For those with a B12 deficiency, injections are an effective way to quickly restore healthy levels

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Because IV infusions bypass both the digestive system and the muscle absorption step, they offer the most direct pathway for nutrient delivery available outside of emergency medical settings

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If you've been following along, you likely already know the answer to this question, but we'll go over the details here

This article covers what that figure is based on, why full scalp coverage matters more than hitting an exact number, and how to apply the serum well in practice
