b12 shots and injections What are the benefits of injection? Boost Your Energy with B12

The answer to 'which is better' depends entirely on what outcome the study is designed to measure

Analytical identification and characterisation

So, you measure a higher B12, but part of that B12 is inactive, so useless Oral B12 supplementation, even in the form of a multivitamin preparation, may result in serum B12 concentrations just within the normal range without abolishing symptoms

How to inject vitamin B12 in your arm Instructions to inject vitamin B12 into your arm B-12 injections are often given in the arm and especially, in medical terms, the deltoid part of the shoulder

Stefanie Drozd Explains How It Works How Does IPL Work