b12 injections vs sublingual treatment PDF] vitamin compared to intramuscular injection in patients with type 2 diabetes treated with metformin: a randomised trial Comparison of Sublingual and Intramuscular

5-amino-1MQ is a research chemical

As described above, there is compelling evidence that significant tissue-level cobalamin deficiency is present in some companion animal patients with gastrointestinal disease

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At the same time, I was alarmed by the case reports of vitamin B12 deficiency in vegan infants, children, and adultssome of which led to permanent damage and death

Some research has explored higher doses up to 1000 mcg daily, though these dont appear to provide proportionally greater benefits