According to the University of Maryland Medical Center, B12, or cobalamin, is an especially important vitamin for maintaining healthy nerve cells, and it helps in the production of DNA and RNA, the bodys genetic material. B12 works with other B vitamins (namely B9) to produce red blood cells and help iron work its way through the body
And some products on the market test far below 85% purity
Research found no evidence of tolerance development, receptor desensitization, or accumulating side effects over the study periods
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[6] [65] [83] In modern industrial agriculture, livestock diets are frequently supplemented with vitamin B 12 or its precursor, cobalt
Keeping logs of any symptoms, their timing, and their resolution