sublingual b12 vs injection Vitamin Injections vs. Supplements: Which Works Best? Vitamin B12 Oral vs Injection​

For a detailed breakdown, the National Institutes of Health provides a great list of B12-rich foods that can help you make informed choices at the grocery store

In short: B12 shots are used because they deliver vitamin B12 faster, more reliably, and more efficiently than oral supplements, especially if you have an absorption issue

But if the amount of bacteriostatic water in your 10mg vial is wrong, every single injection you draw is either too concentrated to measure accurately or too diluted to last through your protocol

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