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And people love hearing this but there is some research that shows B12 can cause a little boost in energy, especially the first day or two after your shot
That way, you can plan your treatment without surprises
Much of the current evidence comes from laboratory and animal studies, which are encouraging but are not a substitute for large, long-term human clinical trials
It delivers B12 directly into the muscle, usually the upper arm or thigh, where its absorbed quickly and used by the body straight away
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