Initial response may be seen in 24 weeks
As vitamin B12 is especially found in animal protein, this method can be helpful for vegetarians, vegans, and others who have little or no natural source of the vitamin
Watch for These Signs It can be tricky to pinpoint a B12 deficiency because the symptoms often overlap with general stress or a busy lifestyle
Despite the first publication of this finding by Kuzminski in 1998, (5) a survey of Canadian physicians in 2007 revealed that 5.6% used oral vitamin B12 as an alternative to intramuscular injections and that only 25% of physicians were aware of the published trial
Zhu, Y., Luo, M., Bai, X., Li, J., Nie, P., Li, B., & Luo, P
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