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Pain or swelling at the injection site, itchiness, or diarrhea can occur
Large national surveys paint a nuanced picture
While oral substitutes have shown some effectiveness according to studies, their ability to match the efficacy of intramuscular vitamin B12 remains uncertain
This dual action, increasing fat breakdown while blocking fat formation, creates a metabolic environment that favors net fat loss even when caloric intake is not dramatically reduced
You may lack vitamin B12 if you dont get enough of this micronutrient in your diet or if you have a digestive system disorder that prevents proper B12 absorption
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