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Most of the side effects of B12 injections are mild, including diarrhea or redness or temporary swelling at the injection site
Many clients appreciate that results can often be felt within hours to days, with effects lasting for several weeks
Vitamin B12 injections are used because they bypass the digestive system
I had successfully done every diet out there, but never really felt healthy until I started working at Nuviva in 2010
PMID 20021721
2022;119(9):e2115524119
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