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They also tell us that they are sick less often and gain muscles and lose weight faster

When drawing doses, remove the vial, draw your dose, and return it immediately

If it calls for 1000mcg (1mg), you would draw 20 units

Even considering all of these factors you need to understand that checking vitamin B12 levels in the serum still isnt the best way to evaluate for B12 deficiency

It contains a small amount of cyanide which the body must detoxify, is shorter-acting and is not recommended by NICE for clinical use

Typically, this means you must have a documented Vitamin B12 deficiency, which our providers can diagnose through appropriate blood tests