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and P.K.supervision

[DOI] [PMC free article] [PubMed] [Google Scholar] 110.Deminice R., Rosa F.T., Franco G.S., Jordao A.A., De Freitas E.C

This raises the question: Can Vitamin B12 be used to treat tinnitus

Earlier shorter trials reported small statistically significant differences but the effect sizes were modest

Yes, when sold strictly as a research reference material for laboratory and in vitro use