how to inject vitamin b12 injection A Vitamin B12 is a quick shot that gives your body vitamin B12 directly into the muscle. This helps your body absorb it faster than tablets. Vitamin B12 helps B12 Shots at Home: How,

Many people who have taken B12 supplements say that is is energy enhancing

In addition, people that avoid animal products can be deficient in B12

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This is probably where the idea that taking more vitamin B12 than you need will give you extra energy originally came from