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as foundational evidence

Additionally, we evaluate and support patients experiencing neurological symptomssuch as numbness, tingling, cognitive changes, or peripheral neuropathywhen a B12 deficiency is suspected or confirmed through laboratory testing

Your muscles feel weak

Research notes Not a peptide

Although vitamin B12 is water-soluble and excess amounts are typically excreted in the urine, the body still stores significant quantities (primarily in the liver) with its levels continuously regulated

If you ever feel worse after a B12 injection, the cause is most likely not the B12 itself, but some troublesome excipient