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Full-B12 Injection injection is administered under the supervision of a healthcare professional
However, it is important to note that oral supplements may not be as readily absorbed as B12 shots
If switching to a plant-based diet, it usually takes years before a clinically manifest deficiency develops, especially taking the reserve capacity of the body into consideration
Research protocols use 250 to 1000 mcg intranasally, one to three times daily
This is generally safe and does not usually cause any common side effects
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