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[DOI] [PubMed] [Google Scholar] 138.Scarano A, Iezzi G, Petrone G, Orsini G, Degidi M, Strocchi R, et al

The most consistently documented side effect of excessive B12 is dermatological reactions, particularly acne-like eruptions and rosacea flare-ups

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[DOI] [PubMed] [Google Scholar] 40.Ferlay J, et al
