What matters for an informed Miami reader is what the evidence supports and what it does not
The primary dietary sources of vitamin B 12 are meats, fish, shellfish and dairy products and as such the deficiency has been reported to be the highest among populations with predominantly a vegetarian or vegan diet 12,13
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You should inform your doctor if you have allergies or certain medical conditions like asthma, peptic ulcer, glaucoma, and urinary obstruction before receiving Full-B12 Injection
You can view sample reports on our Lab Reports page
The oral daily dose far exceeds the vitamin requirement because the normal transporter protein-mediated absorption is absent, leaving only very inefficient intestinal passive absorption