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No data suggests that very high supplementation levels are any more effective at boosting a persons immune system or bodily functions if they do not have a vitamin B12 deficiency
The process is based on an absorption gradient high at site of injection and low in the blood
Normally after a Vitamin B12 injection, many patients start noticing the effects immediately, including more energy and feeling better
Although research in humans is still very limited, some studies suggest that vitamin B12 could affect body fat and metabolism
B12 injections skip the digestive system as they enter the bloodstream directly
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