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However, if you have a low B12 level or a vitamin B12 deficiency, it can cause physical, neurological, and psychological problems
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That matters because 503A is one of the legal frameworks that governs what licensed pharmacies and physicians may compound for individual patients under specific conditions
Huberman protocol: 300500 mcg subcutaneously, two to three times per week for approximately 8 weeks, followed by an 810 week off period
PubMed laboratory research record [PMID: 19994471] PubMed record related to this compound for laboratory literature review
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