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B12 shots have the potential for mild side effects, such as redness where the shot was injected or light diarrhea
However, the rate at which the B12 is released can be a little slower meaning that if you need B12 quickly, injections will be the better option
The formation of red blood cells requires B12
In conjunction with B12, these amino acids work to pump up your natural metabolic rate, meaning your body becomes more proficient in turning food into energy that you can use all without storing more than you need, meaning its more difficult to gain weight
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