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Is Taking B12 Supplements Without a Doctor's Advice Safe

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The theory here is that if you're targeting a specific, deep muscle injury (like a quad tear or a deltoid strain), injecting directly into that muscle might provide more localized benefits in addition to the systemic effects

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10.1056/NEJMoa1709449 [DOI] [PMC free article] [PubMed] [Google Scholar] Niranjan, R

Reputable laboratory suppliers do not make therapeutic claims, do not provide dosing guidance, and do publish batch-specific HPLC verification